Crazy Mountain 100
Trail Running covering 160.9 km in Lennep (Montana, United States)
Crazy Mountain 100 is an endurance sporting event in Lennep, Montana, US focused on Trail Running. Key features include Nature & Off-Road, Mountain.
The competition program features 160 KM (160.93 km, +6,115 m D+). The exact date for the next edition is currently open and will be announced by the organizer. Official race regulations, course details, and registration information are provided on the organizer's website (crazymountainultra.com).

Event characteristics
Races & distances (1)
| Competition | Discipline | Distance | Elevation gain | Altitude range | Course type | Course & profile |
|---|---|---|---|---|---|---|
| 160 KM | Trail Running | 160.93 km | +6,115 m | 620 m - 3,188 m | Loop course | Route & profile |
Course route & map
Elevation profile & course telemetry
Altitude from 620 m to 3,188 m above sea level (+6,115 m D+, -6,115 m D-)
Frequently asked questions (FAQ)
When and where does Crazy Mountain 100 take place?
Crazy Mountain 100 takes place in Lennep, Montana, US (start area at coordinates 46.4161° N, 110.5433° W). The exact date for the next edition is currently open and will be announced by the organizer.
What races and distances are offered at Crazy Mountain 100?
The competition program features 160 KM (160.93 km, +6,115 m D+). The competitions belong to Trail Running.
What is the course layout and elevation profile for Crazy Mountain 100?
The main competition (160 KM over 160.93 km) is designed as a loop course featuring +6,115 m of elevation gain and -6,115 m of elevation loss, ranging between 620 m and 3,188 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.
Where can I find registration and official race rules for Crazy Mountain 100?
Official race regulations, course details, and registration information are provided on the organizer's website (crazymountainultra.com).