Harmon Lake, Mandan ND
Friday, June 12th, 2026
🚴♂️ Event Overview
The Otter Creek Trail Festival returns to Harmon Lake, Mandan, ND, on June 12-13, 2026! Choose from MTB, trail run, and youth categories.
🏞️ Event Details
- Date: June 12-13, 2026
- Location: Harmon Lake, Mandan, ND
- Categories: MTB, trail run, and youth
- More Information: Visit the race page
Course Map
Find The Run Newsletter
Limited-edition FTR Merch