Run the Rim
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Run the Rim
Run the Rim is a trail running event on Sunday, May 31, 2026. It takes place on the Arnold Rim Trail near Arnold, California. The event offers five different race distances:
- 50K Ultra Marathon
- 35K Classic Arnold Rim Trail route
- 21K half marathon distance
- 10K
- 5K
The longer courses (50K, 35K, and 21K) are run on primarily single-track trails through pine, fir, and cedar forests. The 10K and 5K courses circle White Pines Lake and also include single-track trails. All race distances finish at White Pines Park.
Bib pickup is available on the Friday before the race at Mountain Aloha MTB Co in Avery, and on race morning at White Pines Park. A shuttle is provided for the 50K and 35K start. Parking is available at Hazel Fisher Elementary School.
Post-race food is provided by Arnold Pizza Factory starting at 11:00 AM, with vegetarian options available upon request. The event has a 9-hour time limit; all runners must be off the course by 5:00 PM.
The event is organized by the non-profit Arnold Rim Trail Association, with participation supporting the development and maintenance of the trail system. Visit the organization's website for the most recent information.
