Run The Rim

Set against the backdrop of California’s Sierra foothills, Run the Rim offers runners the chance to explore the spectacular Arnold Rim Trail on beautifully maintained singletrack. Towering pine, fir, and cedar forests frame sweeping ridge views, while the welcoming mountain town of Arnold creates a relaxed and supportive race-day vibe.

Hosted by the Arnold Rim Trail Association, this event directly supports the ongoing development and maintenance of this treasured trail system — ensuring it remains accessible for hikers, runners, mountain bikers, and equestrians for generations to come.

50K Ultra

The 50K is the longest and most demanding option, featuring approximately 5,700 feet of climbing and 5,100 feet of descent (based on publicly available course mapping data). Expect a full day on primarily singletrack terrain with sustained climbs, rolling ridge sections, and rewarding forest views. This distance is ideal for experienced trail runners ready for a significant elevation challenge.