Trail
50k
50 km
Start: Jan 3, 05:00 PM
FOURmidable
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Trail in United States, Fourmile Canyon
Distances
Trail
35.5K
35.5 km
Start: Jan 3, 05:00 PM
Trail
13.2mi
21.2 km
Start: Jan 3, 05:00 PM
Trail
13K
13 km
Start: Jan 3, 05:00 PM
About
A mountain trail race series offered in multiple distances (50k, 35.5K, 13.2mi, 13K) featuring cupless aid stations, major swag, and post‑race party. Each runner is responsible for bringing their own reusable cup.
Catering & aid stations
Aid stations provide soda, boiled potatoes, candy, gels, electrolyte, salt tablets, and more. Cupless event: each runner must bring their own reusable cup or water bottle; small collapsible containers will be available for sale at the event.
Pacers
Pacers set target times per Startwelle; look for Pacerflaggen on race day for guidance.
Typical weather in Fourmile Canyon
Monthly averages based on historical data (2000–present).
Jan42°30°
↑ 07:37
↓ 16:42
Feb46°32°
↑ 07:04
↓ 17:27
Mar54°37°
↑ 07:12
↓ 19:07
Apr62°43°
↑ 06:14
↓ 19:47
May72°51°
↑ 05:29
↓ 20:25
Jun80°58°
↑ 05:11
↓ 20:52
Jul90°65°
↑ 05:27
↓ 20:47
Aug88°64°
↑ 06:02
↓ 20:09
Sep78°57°
↑ 06:40
↓ 19:12
Oct63°46°
↑ 07:18
↓ 18:15
Nov49°37°
↑ 07:01
↓ 16:30
Dec41°30°
↑ 07:35
↓ 16:18
Last updated: Jun 6, 2026, 12:27:33 AM
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