Arches Ultra Half Marathon is the 21.0km trail race at Arches Ultra 2026 (Moab, United States). The race starts on January 31, 2026.
The course climbs 266m+. With 13m/km of climbing, the course is predominantly runnable. By gradient, 3% of the distance is uphill, 12% downhill and 85% flat. Surface: 79% trail and 14% road. Flat-equivalent effort: 21.3 FlatKM.
The course is runnable enough that trekking poles are not needed.
There is too little runnable descent to damage the quads: plan the race around climbing and fuelling.
On race day, start temperatures have historically ranged from -3°C to 8°C, with around 5°C at the highest point; the chance of precipitation is about 20%.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Arches Ultra Half Marathon.
Other distances of Arches Ultra 2026Arches Ultra 50 Mile (81.0km)·Arches Ultra 50k (50.0km)·Arches Ultra 9k (9.0km)
