Dadongshu is a climb of 27.9 kilometers (hors catégorie). Dadongshu tops out at 4,109 m above sea level. It is located in 祁连县, 青海省, 中国. The average gradient is 7.2% with a maximum of 18.6%. The climb has 2004 meters of elevation gain.
Difficulty breakdown: This HC climb covers 27.9 km and gains 2004m, and it's a real test because of that and its uneven profile. The main challenge is the string of steep sections (several stretches at 8-12%) broken up by flat or downhill parts, which wrecks your rhythm. The last 5 km are the hardest, with a 12% ramp at KM 21-22 and an 11% one at KM 23-24.
Pacing tips:
1. Pace it section by section: Anticipate the gradient changes. Hold back on the downhill and flat parts (KM 12-15) so you have something left for the 8-9% sections (KM 7-11) and the brutal finish (KM 21-26).
2. Control your effort on the steep stuff: On the 11-12% pitches, keep a smooth gear and a steady heart rate so you don't blow up your legs, especially near the top.
3. Gear for the climb: Run a gear that suits the steep ramps (e.g. 34x32) so you can keep a steady cadence (>70 rpm) over the whole route.
27.9 km • 2004 m D+
VAM: average climbing speed, based on elevation gain
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