Termas del Flaco is a climb of 74.5 kilometers (hors catégorie). Termas del Flaco tops out at 1,747 m above sea level. It is located in San Fernando, Región del Libertador General Bernardo O'Higgins, Chile. The average gradient is 2.7% with a maximum of 13.2%. The climb has 1997 meters of elevation gain.
Difficulty breakdown: Despite a moderate average gradient of 2.7%, this HC climb is hard because of its sheer length (74.5 km) and its big elevation gain (1997m). The difficulty is all about endurance. The profile is mostly false flat up (1-2%) over the first 55 km, with a few steeper sections (4-7%) between km 55 and 72 to finish the climb.
How to manage the effort:
1. Pacing: Start very easy. The first half, which is very gentle (often 1%), tempts you to ride too hard. Save your legs for the 6-7% sections in the last 20 km.
2. Fueling and hydration: With an effort lasting several hours, plan your nutrition. Drink and eat regularly from the start to avoid bonking.
3. Use the descents: The short downhill stretches (KM 13, 26, 31, 36, 56) are chances to recover actively by easing off slightly without losing your momentum.
74.5 km • 1997 m D+
VAM: average climbing speed, based on elevation gain
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