Arches Half Marathon
Race Day Weather
Cool start, warming trend ahead
Runners will face a temperature rise from 57°F at the start to a peak of 75°F by the race's end. Winds will be light, peaking at 7 mph, providing a tailwind during the early miles but shifting to headwinds in the later segments. Adjust pacing to start conservatively, especially as temperatures climb, and focus on hydration early in the race to combat the rising heat.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Arches Half Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Arches Half Marathon race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
Race Info
The Arches Half Marathon runs on the Behind the Rocks Trail about 13 miles south of Moab, Utah, alongside a companion 15K, marathon, and 50K held the same day on the same desert course. The route follows jeep roads and sandy washes with views of the La Sal Mountains and Picture Frame Arch. Mad Moose Events, a family-run race company, has organized the event since 2017. A high-clearance or four-wheel-drive vehicle is recommended for the unpaved access road to the start/finish area.