Run the Rim

Arnold, United States • 31 May 2026

Run the Rim

Run the Rim is a trail running event held at White Pines Lake in Arnold, California. The event takes place on the Arnold Rim Trail, situated at an elevation of approximately 4,000 feet within the Sierra mountains. The courses consist primarily of single-track trails through pine, fir, and cedar forests, with some sections utilizing double-wide multi-use paths.

Participants can choose from several distance options:

  • 22-mile point-to-point trail run
  • Half Marathon
  • 10K run
  • 10K hike

The 22-mile course is a point-to-point route that starts on Fullen Road and concludes at White Pines Lake. The Half Marathon and 10K events both start and finish at White Pines Lake Park, heading southwest toward Angel’s Camp. The Half Marathon includes a turnaround at Cougar Rock, while the 10K turn occurs at Post 8.

Registration fees for the running distances include a custom event T-shirt and an after-party meal with drinks. The 10K hike option does not include a shirt or awards. Awards are presented to top finishers in various categories, including overall male and female winners and specific age groups for the 10K and Half Marathon. Proceeds from the event support the Arnold Rim Trail Association in maintaining the trail system for public use. Visit the organization's website for the most recent information.

Race information

50 km
50k
35 km
35k
Half Marathon
21k
10 km
10k
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

Join the community at Feeney Park for the Mr Frogs Wild Run in Murphys California. Choose between a children's fun run plus five or ten kilometer courses featuring scenic neighborhood loops and a festive medal ceremony.

Experience a rugged trail race through the Sierra Nevada foothills featuring technical single tracks and fire roads. Choose between three distances and take on the steep ascent of El Guapo before celebrating at the finish line fiesta.

Experience a winter run through the technical terrain of the Red Hills Recreation Area in the Sierra Foothills. Choose between six or twelve mile distances featuring water crossings and muddy trails in a scenic natural environment.