Alto de San Rafael is a climb of 12.9 kilometers (hors catégorie). Alto de San Rafael tops out at 1,888 m above sea level. It is located in Bizcocho, Antioquia, Colombia. The average gradient is 8.3% with a maximum of 20.7%. The climb has 1066 meters of elevation gain.
Difficulty analysis: This hors catégorie climb is genuinely tough, with a demanding average gradient of 8.3%. The difficulty is compounded by steep sections, notably a kilometre at 11% (KM 7-8) and another at 10% (KM 11-12) in the final part of the climb, after 10 km of accumulated effort.
How to manage the effort:
1. Find your rhythm from the start: The first kilometres are uneven (4%, 8%, 3%). Don't go over the top on the 8% section, and use the KM 2-3 stretch at 3% to recover and settle into your pace.
2. Save something for the final ramp: Keep some energy in the tank for the last 3 kilometres (KM 10-12.9), which combine to an average gradient of 8.3% with a stretch at 10%. This is the most decisive part of the climb.
3. Manage the KM 7-8 section at 11%: This is the steepest stretch. Select a suitable gear to hold a steady cadence without burning through your reserves too early.
12.9 km • 1066 m D+
VAM: average climbing speed, based on elevation gain
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