Col de zima is a climb of 14.6 kilometers (hors catégorie). Col de zima tops out at 918 m above sea level. It is located in n/a, Boumerdès, Algérie ⵍⵣⵣⴰⵢⴻⵔ الجزائر. The average gradient is 5.9% with a maximum of 15%. The climb has 857 meters of elevation gain.
Difficulty breakdown: This HC climb is genuinely hard because of its uneven profile. The 5.9% average gradient over 14.6km is deceptive: three sections at 9-10% (km 1-2, 3-4, 11-12) are very demanding, while three long flat-ish stretches at 1-2% (km 4-6 and 9-11) give you crucial recovery time.
Pacing tips:
1. Managing the changes in gradient: Expect the three "walls" (start, middle, finish). Tackle them at a controlled rhythm to avoid blowing up, especially the first one at 10% after just 1km.
2. Making the most of the flatter sections: Use the three kilometres at low gradient (4-6 and 9-11) to recover actively by easing off slightly while keeping a steady rhythm.
3. Saving something for the finish: The last kilometre (14.0-14.6) averages 7%. Don't empty the tank too early after the tough km 11-12 section.
14.6 km • 857 m D+
VAM: average climbing speed, based on elevation gain
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