Grizzly Peak Century
- Cycling
- 56 km
- 80 km
- 121 km
- 161 km
- 65 km
- 100 km
Moraga, California, United States
Diablo Trails Challenge 2026
- Trail Run
- 50 km
- Half Marathon
- 10k
- 5k
1700 Castle Rock Rd, Walnut Creek, CA, United States
Save Mount Diablo
About the Event
Diablo Trails Challenge 2026
The Diablo Trails Challenge is a trail running event offering various distances to suit all levels, from beginners to experienced ultra-runners. A portion of the entry fees supports Save Mount Diablo's efforts in preserving open space and trails.
- 50K
- Half Marathon
- 10K
- 5K
Date: April 4, 2026
Location: 1700 Castle Rock Road, Walnut Creek, CA, United States
Registration Fees: Prices vary by distance and registration period. See website for details.
How to get there
Courses
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