Crazy Mountain 100
100 miles through the Crazy Mountain Range in Montana. 23,000 feet of climbing, 36-hour cutoff.
Grade Profile Analysis
Terrain steepness breakdown by grade band for race planning and training preparation.
Explore26-Week Training Plan
A complete training framework for the Crazy Mountain 100—based on Training for the Uphill Athlete methodology.
ExploreCourse Guide & Cutoffs
A comprehensive guide to the Crazy Mountain 100—course details, aid stations, cutoffs, and what makes this race unique.
ExploreRace Week & Taper Guide
Your final two weeks before the Crazy Mountain 100—how to taper, what to do race week, and arriving at the start line ready.
ExploreQuick Facts
Start
Westling Ranch, Wilsall
Friday 6:00 AM
Finish
Berg Ranch, Martinsdale
Saturday 6:00 PM cutoff
Qualifies For
Hardrock 100
Western States 100
Course Records
Men: 22:02:40
Women: 25:06:10
Frequently Asked Questions
What is the Crazy Mountain 100?
The Crazy Mountain 100 is a 100-mile ultramarathon (100 miler) held annually in Montana's Crazy Mountain Range. The race starts at Westling Ranch near Wilsall, Montana and finishes at Berg Ranch in Martinsdale, Montana.
What is the elevation gain of the Crazy Mountain 100?
The Crazy Mountain 100 has approximately 23,000 feet of elevation gain over the 100-mile course. The elevation ranges from 5,800 feet to 10,200 feet, making it one of the more challenging mountain 100-milers in the United States.
Where is the Crazy Mountain 100 located?
The Crazy Mountain 100 is located in south-central Montana, traversing the Crazy Mountain Range. The race starts near Wilsall, Montana (Westling Ranch on Pepper Lane) and finishes in Martinsdale, Montana (Berg Ranch, 41 Berg Road). The nearest larger towns are Big Timber, Livingston, and White Sulphur Springs.
When is the Crazy Mountain 100 in 2026?
The Crazy Mountain 100 2026 race is scheduled for Friday, July 24, 2026, starting at 6:00 AM. Runners have 36 hours to complete the course, with the finish line closing on Saturday, July 25, 2026 at 6:00 PM.
What races does the Crazy Mountain 100 qualify you for?
Finishing the Crazy Mountain 100 qualifies you for both the Hardrock 100 and Western States 100 lotteries. These are two of the most prestigious 100-mile mountain ultramarathons in the world.
What is the time cutoff for the Crazy Mountain 100?
The Crazy Mountain 100 has a 36-hour time cutoff. The race starts Friday at 6:00 AM and the finish line closes Saturday at 6:00 PM. There are also intermediate cutoffs at various aid stations throughout the course.