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Special Performance By Adam Yates | Vuelta a España 2024 Stage 9

Stage 9 of the 2024 Vuelta a España was a grueling mountain test in extreme heat, featuring standout performances by Adam Yates and Richard Carapaz, both of whom revived their GC ambitions.

Vuelta a España stage 9 2024 profile

It was another scorching day in southern Spain, with temperatures rising above 30°C. Red Bull Bora-Hansgrohe struggled to control the breakaway formation once again, allowing UAE Emirates, with Adam Yates, Marc Soler, and Jay Vine, to join a large breakaway. After Joao Almeida dropped out of the race due to COVID-19, Adam Yates became their best hope in the GC, despite a poor performance on the hot day at Pico Villuercas and a crash on stage 6.

With Soler pulling hard on the first big climb of the day and Vine helping on the first ascent of Alto de Hazallanas, the gap continued to increase over the peloton. Earlier, on the Puerto de El Purche, Richard Carapaz accelerated powerfully from the peloton, with no one daring to follow such a bold move. The Ecuadorian averaged 6.25 ᵉW/Kg for 20:41 min, while the peloton was almost 2 minutes slower at 5.63 ᵉW/Kg. Marc Soler, in the breakaway, was pushing 5.92 ᵉW/Kg at the front but lost 64 seconds to Carapaz on the climb.

Carapaz had two teammates in the breakaway—James Shaw and Darren Rafferty—but after they finished their work, the EF Education leader had to spend a lot of energy catching the breakaway. Before he caught David Gaudu, Jay Vine, and Pablo Castrillo, Yates had already attacked early on the first Hazallanas ascent. With a strong performance on the climb and descent, his gap to the O’Connor/Roglič group expanded to more than 6 minutes.

Granada – Spain – cycling – cyclisme – radsport – wielrennen – Adam Yates (GBR – UAE Team Emirates) pictured during 79th La Vuelta Ciclista a Espana (2.UWT) stage 9 from Ubeda to Granada (178.5km) – 25-08-2024 – Photo: Luis Angel Gomez/SCA/Cor Vos © 2024

Yates averaged 6.03 ᵉW/Kg for 24:52 min on the first Hazallanas ascent, while Carapaz, chasing him, was only 5 seconds faster. Meanwhile, the GC riders lost 62 seconds to the Briton, with Florian Lipowitz pacing for Roglič at 5.82 ᵉW/Kg. On the second Hazallanas ascent, after Yates had completed a fast descent and a 5% climb in the valley, he slowed down to 5.87 ᵉW/Kg for 25:41 min. Carapaz was 33 seconds faster but still too far back.

Meanwhile, in the GC group, Roglič struggled on this hot and grueling day as Enric Mas launched an attack. Mas delivered the best single climbing performance of the day, completing the Hazallanas ascent in 23:39 min with 6.41 ᵉW/Kg. He came close to breaking Chris Horner’s 2013 La Vuelta record on the climb, when the American averaged 6.42 ᵉW/Kg over 23:22 min on a less challenging day. Horner gained 48 seconds on Vincenzo Nibali, a crucial margin for his eventual victory in the Grand Tour at age 41. Roglič, O’Connor, Landa, Rodriguez, and other GC riders completed the climb in 24:34 min, with averages ranging from 6.05 to 6.13 ᵉW/Kg. Mas was 55 seconds faster than them, but the descent followed after the climb.

Adam Yates and Richard Carapaz were the only riders who were not caught by the GC group. Mas almost crashed in one of the corners due to excessive braking but was later caught by the GC group just before the finish. O’Connor won the bunch sprint for 4 bonus seconds, narrowly extending his lead over Roglič. Carapaz moved to 3rd place, just 39 seconds behind Roglič, while Adam Yates revived his GC hopes and is now 97 seconds behind the Slovenian and 55 seconds behind Mas, who might be the best climber in this race. The Vuelta will change in the second week as the race moves to northern Spain, specifically the Galician region, where temperatures will drop to around 20°C, and different riders might perform better in cooler conditions. After a strong start in the first week, Antonio Tiberi did not finish Stage 9, while Lennert Van Eetvelt lost almost 4 minutes to the O’Connor/Roglič group. Realistically, several riders still have a chance to win the GC, as there is no dominant rider like Tadej Pogačar or Jonas Vingegaard in this race.

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Roglič Cracks O’Connor With Big Watts | Vuelta a España 2024 Stage 8

Primož Roglič won his 14th Vuelta a España stage with a powerful performance on the Cazorla climb in the hot Jaén province, in the final metres out sprinting Enric Mas.

Vuelta a España stage 8 2024 profile

After gifting more than 6 minutes on Stage 6 to Ben O’Connor, this was the first mountain top finish for Primož Roglič and Red Bull Bora-Hansgrohe to test the Australian and his teammates’ legs. The stage finished up the irregular Sierra de Cazorla (4.8 km, 7.2%) climb, which suited Roglič well with punchy steep sections. It was a relatively easy day with Rein Taaramäe spending 3,040 kilojoules for 3:28h at 13.11 kj/kg/h.

Oier Lazkano, Harold Tejada, and Luca Vergallito had a good chance to win from the breakaway on this hot day, but unfortunately for them, Israel-Premier Tech was pacing hard for their strong climbing trio: George Bennett, Michael Woods, and Matthew Riccitello, none of whom finished in the top 10. A big crash at the start of the climb involved riders like Joao Almeida, Aleksandr Vlasov and Sepp Kuss, who were held back by it. Almeida lost almost 5 minutes and may have COVID-19, according to Eurosport Portugal.

Cazorla – Spain – cycling – cyclisme – radsport – wielrennen – Oier Lazkano (ESP – Movistar Team) – pictured during 79th La Vuelta Ciclista a Espana (2.UWT) stage 8 from Ubeda to Cazorla (159km) – 24-08-2024 – Photo: Luis Angel Gomez/SCA/Cor Vos © 2024

Red Bull went all out with their leadout at the bottom of Cazorla. After Daniel Martinez pulled off, Primož Roglič accelerated and reduced the group. The tempo was uneven as Roglič had no teammates, but his attacks cracked Ben O’Connor, who tried to respond to most of the accelerations in the leading group. In the final part of the climb, O’Connor cracked and needed to sit in the draft of his teammate Felix Gall. Only Enric Mas could challenge the Slovenian. Although Mas was ahead of Roglič in the final meters of the climb, he could not win the sprint against the punchy rider.

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Roglič delivered a strong performance, averaging 7.22 ᵉW/kg for 11:07 minutes on the Cazorla climb. His average speed was 26.18 km/h on an irregular 7.2% gradient. With having more drafting, Enric Mas pushed 0.21 ᵉW/kg less than Roglič. Ben O’Connor lost 46 seconds to the Slovenian, averaging 6.51 ᵉW/kg. However, Stage 9 will be much tougher, featuring three major climbs in the Granada province.

Greatest Teenager Performance Of All Time | Tour de l’Avenir 2024 Stage 6

After a horrible day on Stage 5, Pablo Torres did everything he could to win the Tour de l’Avenir GC on Colle delle Finistre, but even the greatest performance of all time by a teenager was not enough to regain all the time lost to Joseph Blackmore on Stage 6.

Tour de l’Avenir stage 6 2024 profile

It was the final stage of the Tour de l’Avenir, finishing atop the mighty Colle delle Finestre, with the second part of the climb featuring a smooth gravel section. Joseph Blackmore led the GC after a decisive move in yesterday’s stage, holding a 5-minute advantage over Pablo Torres. The stage was relatively easy until Finestre, with Mats Wenzel spending 1,861 kilojoules over 2 hours and 20 minutes at a rate of 11.53 kj/kg/h.

Jarno Widar was not feeling great for the second day in a row, dropping early and losing 28 minutes today, with a 4.00 ᵉW/kg performance over 88:54 minutes on Finestre. The Spanish team, along with Torres, knew they had to pace hard from the bottom, and the Spaniard managed to drop everyone, including Joe Blackmore, with 12 km to go. Despite delivering one of the greatest climbing performances by any U23 rider, it was not enough to win the GC. Torres beat Blackmore by 3 minutes and 43 seconds on Finestre but lost the GC by 12 seconds, with Tijmen Graat finishing 3rd.

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Despite Blackmore winning the GC, all the attention turned to Torres, who delivered an incredible performance on Finestre. The 18-year-old Spanish rider averaged 6.04 ᵉW/kg for 60:45 minutes, equivalent to 6.34 ᵉW/kg at sea level. Torres even beat Chris Froome’s time on Stage 19 of the 2018 Giro d’Italia by 3 minutes and 34 seconds, when the Kenyan-born cyclist won with an 80 km solo raid. Though Blackmore and Graat lost significant time, both achieved their career-best climbing performances on a pure w/kg climb, with 5.64 and 5.57 ᵉW/kg over more than 64 minutes.

Torres’ performance on Les Karellis during Stage 4 was extraordinary, comparable to a top 10 effort in Chris Froome’s legendary career. Torres has improved significantly since his junior races and even the U23 Giro, where he averaged 6.4 ᵉW/kg for 26:35 minutes at sea level. Below in the graph are Froome’s 10 best performances adjusted for sea level. Despite winning four Tour de Frances and seven Grand Tours, Froome never reached 18 year old Torres’ level, even on a low-kilojoule day. Yet, 11 years later, Froome’s once-stunning effort pales in comparison to the achievements of today’s teenagers.

Spanish Superstar Torres Destroys Widar | Tour de l’Avenir 2024 Stage 4

Pablo Torres performed better than anyone on the Les Karellis climb, attacking midway and securing the biggest win of his career by dropping Jarno Widar and Joseph Blackmore, who were faster in the final meters yesterday.

Tour de l’Avenir stage 4 2024 profile

After La Rosiere on Stage 3, today it was a chance for the U23 riders to show their w/kg ability on Les Karellis as it was regular and well suited to top climbing performances. The stage started with a long climb up Tignes and Col de l’Iseran. The GC group did the high altitude climb in 43 minutes with 4.7 ᵉW/Kg, which would be equivalent to 5.2 ᵉW/Kg at sea level. Mats Wenzel before Les Karellis had spent 3,103 kilojoules for 3:30h at 12.98 kj/kg/h.

In the earlier part of the climb Diego Pescador and later Michael Leonard attacked but they were not the biggest threats to Jarno Widar. After a good performance yesterday Spanish wonderkid Pablo Torres was feeling better and with 6 km to go he attacked from the GC group and no one could respond. Torres quickly caught and dropped Leonard, riding for his biggest win yet in career. Joseph Blackmore after a good performance on the shallower La Rosiere was struggling on Les Karellis as he is not a pure climber. The race favourite Jarno Widar finished 45 seconds behind Torres between two Visma Lease a Bike Development team riders Darren van Bekkum and Tijmen Graat.

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Torres’ performance was exceptional for an 18-year-old, as he did 6.29 ᵉW/Kg for 31:24 min to take the leader’s jersey, which is equivalent to 6.55 ᵉW/Kg at sea level. Torres is a first year u23 rider who was born in November and therefore is almost the same age as the oldest junior riders. Given this strong performance, the young Spaniard might move from the UAE development team to the main team in 2025.

Before the race, Torres might not have received as much hype as other teenage talents like Paul Seixas, AJ August, Jørgen Nordhagen, Jarno Widar, and Albert Withen Philipsen, but his climbing perrformance at Karellis has outshone any performance by any of them in a race so far. Widar, Van Bekkum, and Leonard all pushed 6.06 – 6.08 ᵉW/Kg on the climb, which might have been sufficient in previous editions of the Tour de l’Avenir, even when Tadej Pogačar won in 2018 without a stage win, but the younger generation continues to improve. The most talented first-year U23 riders are now proving they can compete against the older U23 competitors.

Climbing Supertalent Marion Bunel Performs Again

After multiple great performances in World Tour races, Marion Bunel proved her favourite status and won on the mighty Les Karallis climb in Tour de l’Avenir Femmes Stage 1.

Tour de l’Avenir Femmes Stage 1 2024

After a prologue up a short climb, it was another climbing test for U23 riders. With the route going down for most of the 60 kilometres before Les Karellis (11.19 km, 8.11%), it was going to be a good FTP test for the riders with a good warm-up before it. Nicole Steinmetz spent 623 kilojoules for 1:31h at 9.38 kj/kg/h, making this one of the easiest possible stages.

French superstar Marion Bunel launched an attack with 5.7 km to go, with only prologue winner Lore De Schepper and Isabella Holmgren managing to follow. The trio briefly worked together before Bunel attacked again, dropping both rivals. Holmgren then took on the chase, successfully distancing Schepper. In the end, Bunel secured the victory.

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Marion Bunel performed similarly to Villars-Sur-Ollon in the Tour de Suisse, where she finished 7th against world-class competition. On Les Karellis Bunel averaged 4.97 ᵉW/Kg for 38:45 min. On Villars Sur Ollon it was 5.19 ᵉW/Kg for 27:53 min. When normalized for altitude and for 60 minutes both performances were exact with 495 aSLP, but the Tour de Suisse stage was harder before the climb. Also other teenage superstars finished an extremely high level for their age. Holmgren pushed 4.88 ᵉW/Kg for 39:19 min, while De Schepper finished third with 4.85 ᵉW/Kg. Bego, Steinmetz, Vadillo and Vinke all performed above 4.70 ᵉW/Kg, while Fariba Hashimi after a good performance in Olympics continued with 4.63 ᵉW/Kg for 41:19 min.

18-Year-Olds Challenge Geraint Thomas’ 2018 Record

In a grueling stage up La Rosière, 18-year-olds Jarno Widar and Pablo Torres delivered remarkable performances, coming close to Geraint Thomas’s 2018 record on La Rosiere, with Joseph Blackmore ultimately taking the win.

Tour de l’Avenir stage 3 2024 profile

It was the first mountain test in the Tour de l’Avenir, with a finish up La Rosière (9.9 km at 6.8%). The climb was previously featured in the 2018 Tour de France, where Geraint Thomas triumphed over Tom Dumoulin and Chris Froome, winning the stage and taking the overall lead in the race. Six years later, in the Tour de l’Avenir, there was possibly an even more impressive performance, or at least one of a similar level. Before La Rosière, the race was extremely intense. Mats Wenzel expended 1,947 kilojoules over 1 hour and 46 minutes, at a rate of 15.79 kJ/kg/h. The GC group tackled the first two climbs at 5.55 ᵉW/kg for 22 minutes and 5.5 ᵉW/kg for 36 minutes. In comparison, during Thomas’s 2018 stage, which was 38 kilometers longer, the climbs were ridden at a slower pace, with 5 ᵉW/kg for 43 minutes and 5.3 ᵉW/kg for 38 minutes on the two major climbs that day.

One of the race favorites, AJ August, was dropped early in the race, along with the next INEOS hope, Artem Shmidt. Due to a lack of finances, the Norwegian federation did not send their team and one of the best young climbers, Jørgen Nordhagen, to the race. Jarno Widar, the winner of the Giro U23, Giro Valle d’Aosta – Mont Blanc, and Alpes Isère Tour, was likely the main favorite for the win today, with his teammates setting the pace on the early climbs.

On the steep section of La Rosière, Widar launched a decisive attack, reducing the group to just 5-7 riders. Shortly after, he attacked again, going solo off the front. Blackmore, with Torres on his wheel, was chasing. As the gradient increased, Torres was dropped, but Blackmore managed to catch Widar on the steepest part. Torres rejoined the pair and immediately attacked twice, with Widar closing both moves. In the end, Blackmore launched an early sprint to the finish, winning easily as a third-year U23 rider.

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As the stage before the climb was extremely challenging, with tough early climbs (one of the strongest U23 riders, Jakob Söderqvist, finished outside the time limit), and because the average altitude of the climb was moderate and La Rosière itself is not a regular climb, the pure ᵉW/kg numbers were not exceptionally high. Before our segment, on the shallow section, the GC group averaged 5 ᵉW/kg for 12 minutes.

Widar was the most impressive, producing 5.89 ᵉW/kg for 25 minutes and 51 seconds, despite having no draft for two-thirds of the climb. Joseph Blackmore won with 5.80 ᵉW/kg, benefiting from considerably more draft compared to the others, while Pablo Torres averaged 5.75 ᵉW/kg. Both 18-year-olds, Torres and Widar, had already performed well in the U23 Giro on the Fosse stage, finishing 1st and 2nd. Blackmore was nine seconds slower than Thomas in 2018, when the Welshman won the stage with 5.92 ᵉW/kg for 25 minutes and 39 seconds. Had the earlier climbs not been so tough, or the lead group did not tactically stall, the record would very likely have been smashed by Widar or Blackmore.

Roglič Snatches The Win In Extreme Heat | Vuelta a España 2024 Stage 4

After a magnificent performance in the San Sebastián Classic, Lennert Van Eetvelt came very close to his first Grand Tour stage victory, but in the final metres, Primož Roglič beat him at the line, taking his 13th stage win in La Vuelta.

Vuelta a España stage 4 2024 profile

The first hard mountain stage of La Vuelta featured a summit finish at Pico Villuercas. The climb began with a gentle gradient, followed by several very steep kilometres, and ended with a more gradual ascent. The Extremadura region was experiencing extreme heat, with temperatures reaching 40°C, and 35°C on the final climb. Brandon McNulty spent 3,543 kilojoules over 4 hours and 9 minutes, at a rate of 12.75 kg/kj/h. The intense heat exhausted the riders before tackling the steep ramps of Pico Villuercas.

With Red Bull-Bora-Hansgrohe, Lidl-Trek, and UAE Emirates setting the pace on the 4-5% gradient, the tempo was high on Pico Villuercas, with riders producing 5.8 ᵉW/kg for 23 minutes. When the steep gradients began, the road surface was far from ideal, with rolling resistance higher than usual. The GC group quickly shattered as Pavel Sivakov attacked, causing Primož Roglič to panic and close him down, being one of the race favourites. Later on the climb, Felix Gall attacked on the steep ramps but was eventually caught by Roglič, Lennert Van Eetvelt, and Enric Mas.

Pico Villuercas – Spain – cycling – cyclisme – radsport – wielrennen – Nico Denz (GER – Red Bull – BORA – hansgrohe) pictured during 79th La Vuelta Ciclista a Espana (2.UWT) stage 4 from Plasencia to Pico Villuercas (170.5km) – 20-08-2024 – Photo: Luis Angel Gomez/SCA/Cor Vos © 2024

Primož Roglič, Enric Mas, and Lennert van Eetvelt averaged 6.79 – 6.81 ᵉW/kg for 12 minutes and 4 seconds on the steep section (2.9 km at 13.76%). Joao Almeida, Matthew Riccitello, and Felix Gall lost 8 to 10 seconds with 6.70 – 6.72 ᵉW/kg. In the final five minutes of the climb on the main road, the leaders’ pace slowed down, allowing even Mikel Landa to catch up, forming a 7-rider group. The ᵉW/kg figures are not as high overall, as they averaged 5.80 ᵉW/kg on the shallow section, which would be equivalent to 6 ᵉW/kg for the entire climb, completed in 40 minutes and 18 seconds.

With Mikel Landa attacking after catching the group, Van Eetvelt closed his attack with Roglič on his wheel. The 2024 UAE Tour winner was looking to win but celebrated too early and stopped pedalling in the last metres, with Roglič taking a characteristic stage win in La Vuelta. Of the GC favourites, Sepp Kuss and Adam Yates in the hot conditions underperformed relative to their expectations losing significant time to the other contenders.

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Historical Drama on Alpe d’Huez |Tour de France Femmes 2024 Stage 8

With a nail-biting finish, the 2024 edition of the Tour de France Femmes was one for the history books, as Demi Vollering, Pauliena Rooijakkers, and Katarzyna Niewiadoma battled for the GC victory on Col du Glandon and Alpe d’Huez right until the last kilometre.

Tour de France Femmes avec Zwift stage 8 2024 profile

It was the queen stage of the Tour de France Femmes, featuring two huge mountains in the second part: Col du Glandon and Alpe d’Huez. After crashing hard on Stage 5 and losing 75 seconds in the GC to Katarzyna Niewiadoma before the final stage, defending champion Demi Vollering would need to attack to reclaim her lead. Niewiadoma, who finished 3rd in the 2022 and 2023 editions, proved her status as a world-class climber on tough days with her performance on the Col du Tourmalet last year.

SD Worx had four riders in the breakaway, but did not gain much time as multiple teams were pulling in the peloton in the valley before Glandon. Austrian supertalent Valentina Cavallar, in only her 20th bike race, attacked from the peloton and bridged to the breakaway during the second part of the Glandon. In the peloton, Fisher-Black was pulling on the steep section of the Glandon. As expected, Vollering attacked, and Niewiadoma could not follow, quickly losing a minute. Pauliena Rooijakkers managed to stay with Vollering.

Cavallar was the fastest on Glandon with 4.65 ᵉW/kg for 66:15 min on the full climb and 4.90 ᵉW/kg for 34:52 min on the second part, which is 5.20 ᵉW/kg normalized at sea level. The shallow section in the middle did not suit for an even higher ᵉW/kg performance. Cavallar, Vollering and Rooijakkers crossed the summit together, gaining 57 seconds on the group containing Katarzyna Niewiadoma, Sarah Gigante, Gaia Realini and Evita Muzic.

Vollering was the faster descender but did not try to drop Rooijakkers on the descent, even though Rooijakkers was ahead of her by 2 seconds in the GC. Niewiadoma’s group was caught by Lucinda Brand, who did a massive pull for her teammate Gaia Realini, closing the gap to Vollering to 43 seconds before Alpe d’Huez. British hill climb champion Illi Gardner holds the climbing record on the legendary ascent, having achieved 5.21 ᵉW/kg for 46:37 on a training ride—one of the greatest performances ever on a climb. However, her record remained untouchable due to the hard racing before Alpe d’Huez.

Vollering had to do most of the work on the climb and in the valley. Despite being by far the strongest women’s climber in the world on such stages, the crash on Stage 5 and SD Worx’s questionable tactics cost her the Tour de France victory. Vollering won on Alpe d’Huez but lost the GC by 4 seconds to Niewiadoma, with Rooijakkers finishing only 10 seconds behind.

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Vollering completed Alpe d’Huez in 49:40 min, pushing 4.84 ᵉW/kg. She was 3:03 min slower than Gardner’s record, highlighting the significant impact a hard stage and tactics can have on climbing times. Despite struggling on Glandon, Niewiadoma recovered in the valley and lost only 18 seconds on the climb to Vollering, who was unable to drop Rooijakkers and was not fully pacing the entire climb for that reason. Sarah Gigante lost 3:46 min to Niewiadoma on the descent and in the valley but still posted the fifth-fastest time on Alpe d’Huez, with 4.77 ᵉW/kg for 50:21, finishing 7th in the GC in this great race.

Visma Pace for Nothing as Alaphilippe Shines | San Sebastian 2024

Marc Hirschi and Julian Alaphilippe were the strongest riders in the 2024 edition of the San Sebastian Klasikoa, in what felt like a throwback race from 2020. Hirschi out-sprinted Alaphilippe to secure his first World Tour victory in four years.


Donostia San Sebastian Klasikoa 2024 profile

It was the first World Tour race following the Tour de France and the Olympics, making it difficult to predict who would emerge as the strongest riders, given the uncertainty around their form. Visma Lease a Bike controlled the pace on Jaizkibel and at the start of the steep Erlaitz climb. The team brought a strong lineup to the Basque Country, including Jonas Vingegaard, Sepp Kuss, Dylan van Baarle, Thomas Gloag, and Wilco Kelderman.

Before reaching Erlaitz, Brandon McNulty had already expended 3,900 kilojoules over 4 hours and 40 minutes at a rate of 12.19 kj/kg/h. It had already been a long day in the saddle before the crucial Erlaitz climb (3.71 km, 11.11%). The race ignited when Florian Lipowitz attacked with Julian Alaphilippe on his wheel. Shortly afterward, Pavel Sivakov joined the pair and quickly dropped them with his high pace. The tempo on Erlaitz exposed even strong climbers like Simon Yates and Jonas Vingegaard, who were not in peak form after the Tour de France. These two will be teammates next year on the Dutch squad.

San Sebastian – Spain – cycling – cyclisme – radsport – wielrennen – Van Baarle Dylan (NED / Team Visma | Lease A Bike) ) pictured during Donostia San Sebastian Klasikoa 2024 – 44th Edition – San Sebastián – San Sebastián 236 km – 10/08/2024 – Photo: Rafa Gomez/SCA/Cor Vos © 2024

Mikel Landa, Sepp Kuss, Dani Martinez, Giulio Ciccone, Santiago Buitrago, and other strong climbers struggled to perform in this one-day race. In the 2022 edition, Tadej Pogačar, Joao Almeida, and Juan Ayuso all failed to finish. Pogačar was distanced by Louis Vervaeke on the shallow Jaizkibel. Later in the season, Ayuso and Almeida finished 3rd and 4th in La Vuelta, while Pogačar went on to win Il Lombardia and GP Montreal.

Sivakov was the fastest climber on Erlaitz with 6.88 ᵉW/Kg for 12:31 min. The following group with 10 riders (Vermaerke, Woods, Powless, Alaphilippe, Narvaez, Van Gils, Hirschi, McNulty, Kron, Van Eetvelt) averaged 6.65 ᵉW/Kg for 12:49 min. It will be hard for anyone to break Remco Evenepoel’s mighty effort in the 2022 edition as he with almost no drafting did Erlaitz 40 seconds faster than Sivakov with 7.34 ᵉW/Kg.

Sivakov did not gain a huge lead as Lotto Dstny had three riders in the second group: Lennert van Eetvelt, Maxim van Gils, and Andreas Kron. Among the 18 riders in that group, four were Sivakov’s teammates: Jan Christen, Marc Hirschi, Brandon McNulty, and Isaac del Toro. Sivakov managed to hold a 15-second lead before the final steep Pilotegi climb (2.1 km, 10.8%), which included a final kilometer at a 14.5% gradient.

Julian Alaphilippe attacked in the first part of the climb, with Marc Hirschi, Brandon McNulty, Patrick Konrad, and Jhonatan Narvaez following. They were caught by Lennert van Eetvelt and other riders, but on the steep section, Alaphilippe and Hirschi broke away again, gaining a significant gap by the top of the climb. Alaphilippe and Hirschi pushed 7.34 – 7.38 ᵉW/kg for 6 minutes and 43 seconds, with irregular pacing.

San Sebastian – Spain – cycling – cyclisme – radsport – wielrennen – Julian Alaphilippe (FRA – Soudal – Quick Step) pictured during Donostia San Sebastian Klasikoa 2024 – 44th Edition – San Sebastián – San Sebastián 236 km – 10/08/2024 – Photo: Rafa Gomez/SCA/Cor Vos © 2024

Alaphilippe, with his twitching legs, was not tactically perfect in the finale and took over from Hirschi in the final stretch. Hirschi opened his sprint first and beat Alaphilippe, who did not attempt to draft him for a second. Van Eetvelt finished third, chasing the leading duo alone. It was Hirschi’s first World Tour victory since the 2020 La Fleche Wallonne.

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Adjusted Sea Level Power Explained

Adjusted Sea Level Power (aSLP) is our latest development of climbing performance metrics based on ᵉw/kg. This article will explain how aSLP is calculated, what it represents and what limits this stat has. To read our explanation on how we calculate ᵉw/kg please see this article.

aSLP compresses every climbing performance into a single, directly comparable number, normalising for duration and altitude. The calculation process starts with the estimated ᵉw/kg as a base value. Other values necessary for the calculation are the duration of the effort as well as the median altitude of the climb. From this you can already guess that aSLP accounts for the duration as well as the altitude of a performance.

The first step in the calculation is converting ᵉw/kg to Sea Level Power (SLP). Sea Level Power represents what power a rider would be able to do with this performance if the entirety of the effort was at sea level, as it is more difficult to develop power at higher altitudes, due to the lower oxygen concentration. This Sea Level Power is calculated based on this study by Peronnet et al on the effect of altitude on running performances, see graph below:

The theorised effect of altitude in the study strongly correlates with the trends we were able to draw based on our database with over 9,000 climbing performances. Based on this we calculate how much power a rider would have been able to develop at Sea Level. This is what Sea Level Power represents.

What should be mentioned is that the altitude effect, which SLP adjusts for, is obviously for the average rider and individual riders may respond differently to altitude. Miguel Angel Lopez might be able to develop a higher Sea Level Power at higher altitude, because he is more used to this environment than the average rider. That obviously means his performance level is higher at altitude, which is what we are trying to measure here so it is not a problem. The same principle applies in estimating ᵉw/kg for riders with outlier aerodynamic drag, such as Remco Evenepoel, who may be able to develop a higher ᵉw/kg for his actual power on shallower gradients, compared to a rider such as Felix Gall.

Sierra Nevada – Spain – wielrennen – cycling – cyclisme – radsport – Miguel Angel LOPEZ MORENO (Columbia / Team Astana) pictured during La Vuelta ciclista a Espana 2017 (2.UWT) stage 15 from Alcala la Rea – Sierra Nevada (129,4 km) – photo Miwa iijima/Cor Vos © 2017

Now the first step of the calculation is complete, as we have adjusted the raw ᵉw/kg for altitude. The next step to directly compare performances is to normalise for duration.

In this step we will adjust every performance to a duration of 60 minutes, which will give us a simple number to compare all performances. To be able to adjust the Sea Level Power to 60 minute efforts, we had to create a standard Sea Level power trend-line/power curve, which we created based on our data set, while taking into account the work of Valenzuela et al in his study regarding power profiles of male professional cyclists.

These Sea Level standard trend-lines differ from the standard ᵉw/kg trend-lines, as they have a smaller power drop off for longer durations. This is the case as the ᵉw/kg trend-lines were also created based on existing data and, on average, longer climbs have a higher altitude, which means the higher altitude for longer efforts was (at least partly) indirectly taken into account in those trend-lines. This also led to longer efforts at low altitude being quite overrated in those graphs, while short efforts at high altitude were quite underrated. This issue is obviously fixed with SLP and aSLP.

Below you can see a graph with the top performances at the Tour de France in SLP, compared to the standard SLP Trend-lines.

Based on the mathematical equations for the standard SLP trend-line, every effort is adjusted to the equivalent 60 minute power. This 60 minute Sea Level Power is the final aSLP value. In the last step, the value is simply multipled by 100, so the metric is easily distinguishable from ᵉw/kg and SLP. So an effort of 6,30ᵉw/kg for 60 minutes at sea level is a 630 aSLP performance.

For reference, 660 aSLP (6,60ᵉw/kg at 60min at Sea Level) is equivalent to the pink trend-line, 635 aSLP is the red trend-line, 615 aSLP for the yellow trend-line and 590 aSLP the green trend-line. Below you can see a list with all performances above the pink trend-line/660 aSLP.

If we exclude multiple performances on the same climb (so only one of 'Pogacar Plateau de Beille' and 'Pogacar Plateau de Beille Last 10,55km'), Marco Pantani still leads the list with 5 such performances, ahead of Tadej Pogacar, Jan Ullrich with 3 and Bjarne Riis, Santiago Perez with 2. Ivan Basso, Evgeni Berzin, Alberto Contador, Miguel Indurain, Pavel Tonkov, Jonas Vingegaard, Adam Yates and Alex Zülle have achieved this once.

What this metric offers is a more advanced comparative performance metric than ᵉw/kg. Nonetheless, aSLP is still far from a definite decider as to which performance is more impressive. Factors such as weather, prior stage difficulty and pacing still massively impact the aSLP output on the final climb. Future work, building on aSLP, will be to develop metrics that will also take into account these factors, but for now aSLP is our most advanced stat, which means a large part of rating climbing performances remains a (partly) subjective analysis.

I hope this article clarifies what aSLP is and how it can be used, as we will quote this metric more and more from now on. Any additional questions or feedback is welcome!

Gabriel Stròżyk (@NaichacaCycling)