Great Wall 100K

Course

The course climbs 3987 m+. With 40 m/km of climbing, this is a rolling, mostly runnable course. By gradient, 36% of the distance is uphill, 36% downhill and 28% flat. The longest climb runs 5.3 km at an average 4.6% grade (242 m of vertical). The longest descent runs 4.2 km at 7.0% (293 m of vertical). The steepest climb averages 27.8% over 0.2 km. The steepest descent drops at 30.8% over 0.3 km. Surface: 48% trail and 22% road. Flat-equivalent effort: 137.6 FlatKM.

Poles

Poles bring little benefit here — only about 6.2 km of pole-friendly terrain.

Quad damage

Quad damage risk is moderate (index 40 of 100), with 43% of the load in the first half: 2 descents deserve a plan and a couple of downhill sessions before race day.

• Control on the marked descents until km 50, target pace until km 79, free after that. Short descents not listed: target pace.
• #1 · 9.9–14.1 km · 293 m D−, -7.0% · 86% of the race ahead → control
• #2 · 17.9–19.8 km · 257 m D−, -13.8% · 80% of the race ahead → control

Weather

Historically on race day, start temperatures range from 18°C to 27°C, around 18°C at the highest point; the chance of precipitation is about 30%. Heavy rain of 10.0 mm or more falls on about 4% of days around this date.