Home / Climb power / Bola del Mundo
Bola del Mundo: published power figures
Spain · Power figures for Bola del Mundo as printed by the press, shown on a race broadcast or taken from a rider's own file, each with its source. None of them is our estimate.
The climb
Sierra de Guadarrama (Madrid / Castile and León), Spain
| Side | Start | Length | Elevation gain | Average | Max | Summit | Hairpins | Source |
|---|---|---|---|---|---|---|---|---|
| Puerto de Navacerrada | Puerto de Navacerrada | 3.2 km | 401 m | 12.5 % | 18.3 % | 2258 m | 11 | climbfinder.com |
| Collado Villalba | Collado Villalba | 21.6 km | 1366 m | 6.3 % | 16.4 % | 2258 m | 12 | climbfinder.com |
| La Granja | La Granja | 16.7 km | 1082 m | 6.5 % | 17.5 % | 2259 m | 15 | climbfinder.com |
Each side from one source, linked. A dash: the sources we opened disagree or give no figure, so we leave it out.
In the Grand Tours since 1996 3
| Year | Race | Stage | Type | Stage winner or first over the top | Source |
|---|---|---|---|---|---|
| 2025 | Vuelta a España | 20 | Summit finish | Jonas Vingegaard | lavuelta.es |
| 2012 | Vuelta a España | 20 | Summit finish | Denis Menchov | bikeraceinfo.com |
| 2010 | Vuelta a España | 20 | Summit finish | Ezequiel Mosquera | en.wikipedia.org |
Records
| Record | Rider | Time | Year | Source |
|---|---|---|---|---|
| Puerto de Navacerrada: fastest race ascent (watts2win segment 3.2 km, 12.06%) | Jonas Vingegaard | 0:13:05 | 2025 | watts2win.eu |
A time is listed only where the sources agree on it; where two sources give different times for the same ride, it is left out.
How long would it take you?
Your time up Bola del Mundo at a steady power, from a physics model.
Advanced: rolling resistance and drag
Estimate from a physics model (Martin et al. 1998), on the average gradient. Wind, surface, pacing and steep sections change the real time. More cycling tools
How this is calculated
P × 0.977 = ½ · ρ · CdA · v³ + v · m · g · (sin θ + Crr · cos θ), θ = arctan(average gradient), m = rider + bike, g = 9.81; solved for the speed v, time = length / v. Air density ρ: NASA GRC troposphere: T=15.04-0.00649*h; p=101.29*((T+273.1)/288.08)^5.256; rho=p/(0.2869*(T+273.1)); h = mean of start and summit altitude. Sources: Martin et al. 1998, J Appl Biomech 14(3):276-291 — https://collections.lib.utah.edu/ark:/87278/s6jd5f71; Defraeye et al. 2010, J Biomech 43(7):1262-1268 (upright position, cyclist+bike 0.270 m2) — https://lirias.kuleuven.be/retrieve/232736; NASA Glenn Research Center, Earth Atmosphere Model (metric) — https://www.grc.nasa.gov/www/k-12/airplane/atmosmet.html. Climb geometry: the side's source in the table above.
Published power figures 1
| Rider | Effort | Figure | Duration | Type | Source |
|---|---|---|---|---|---|
| Jonas Vingegaard | Vuelta 2025 st.20, Bola del Mundo 2025-09-13 | 6.20 W/kg (6.63 sea-level adj.) W/kg (est.) | 37:46 | Analyst estimate | Lanterne Rouge Kārlis Ozols, 2025-09-13“6.20 w/kg for 37:46” |
As published, with no conversion: each figure is labelled by what it is, and links to where it was printed. All published power figures →