Rim Rock 50 Mile Trail Challenge

Rim Rock 50 Mile Trail Challenge

The Rim Rock 50 Mile Trail Challenge is a trail running event held in Napa, California, centered at Skyline Wilderness Park and extending into Napa Open Space and the Suscol Headwaters Trail system. The event uses a multi-loop course that includes rugged ridgelines, oak-shaded stretches, exposed terrain, and panoramic valley views. The published route comprises two full large loops of roughly 22 miles each plus a final shorter loop, with the solo 50-mile option covering about 51 miles in total. The course is subject to modification for trail conditions and access permissions.

Distances

• 50 mile solo about 51 miles, two large loops plus final 10k
• 25 mile one-loop option, approximately 25 miles

Logistics note the presence of multiple aid stations stocked with water, electrolyte drink mixes, GU gels, fruit, PB&J sandwiches and snacks. The event enforces a cupless policy: all participants must carry their own reusable cup, bottle, or hydration pack; aid stations will refill personal containers. There is a designated drop bag area near the start/finish. Crew access is limited to the Start/Finish and Lake Marie Aid Station; pacers are allowed only for solo 50-mile runners after the first loop and must carry their own nutrition.

Additional details include on-site vendors and post-race food options, available camping at Skyline Wilderness Park, finisher swag and awards policies, and a non-refundable entry policy with limited race credit options for cancellations. Visit the organization's website for the most recent information.