Rim Rock 50 Mile Trail Challenge

Rim Rock 50 Mile Trail Challenge is the inaugural ultramarathon in Napa Valley, staged at Skyline Wilderness Park and weaving through the Napa Open Space Preserve and the new Suscol Headwaters Trail System. The event offers a 50-mile solo option or a two-person relay, with two roughly 26-mile loops that comprise the course. Runners tackle rugged ridges, oak woodlands, and sweeping valley views across shaded and exposed segments.

A cupless race promotes environmental stewardship, requiring participants to carry their own hydration. Pacers are permitted for solo runners on the final loop. Finisher swag includes branded apparel, post-race meals, and a celebratory vibe for a growing trail community. Visit the organization's website for the most recent information.