Old Ziro is a climb of 43.2 kilometers (hors catégorie). Old Ziro tops out at 1,808 m above sea level. It is located in 皮衣木克, Arunachal Pradesh, India. The average gradient is 7.2% with a maximum of 21.7%. The climb has 3122 meters of elevation gain.
Difficulty breakdown: At 3122m of climbing over 43.2km, this hors catégorie ascent is a demanding test of endurance. The 7.2% average gradient is significant, but the real difficulty lies in the uneven profile: several sections at 7-8% (KM 13, 19, 23-24, 40) and two short descents (KM 25-26) that break your rhythm.
Pacing tips:
1. Ride within your limits in the first kilometres (moderate gradients) to avoid blowing up before the critical 6-8% sections.
2. Make use of the flat sections (KM 8-9, KM 20, KM 42) to recover actively without losing tempo.
3. Anticipate the changes in gradient: the descents (KM 25-26) require getting back on the pedals quickly so you don't lose momentum before the next climbing section.
43.2 km • 3122 m D+
VAM: average climbing speed, based on elevation gain
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