Alto de Fasnia is a climb of 13.0 kilometers (hors catégorie). Alto de Fasnia tops out at 1,280 m above sea level. It is located in Fasnia, n/a, España. The average gradient is 9.5% with a maximum of 23.5%. The climb has 1241 meters of elevation gain.
Difficulty breakdown: This 13 km climb has two distinct parts. The first 7 km are moderate, with gradients of 5% to 7%, but the difficulty ramps up hard in the second half. From KM 7 on, gradients consistently exceed 10%, with brutal sections at 18% (KM 7-8) and 15% (KM 12-13). The 9.5% average gradient is pulled up by this punishing finale.
Tips for managing the effort:
1. Pacing: Start easy over the first kilometers to save your legs. The real climbing starts after KM 7.
2. Know the key sections: Prepare mentally and physically for the 18% wall at KM 7 and the 15% finish. Pick a gear you can turn over comfortably to keep your cadence steady.
3. Build your effort: Don't blow up in the middle section. The climb demands more and more power, so spread your effort across the whole ride.
13.0 km • 1241 m D+
VAM: average climbing speed, based on elevation gain
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