Rim Rock 50 Mile Trail Challenge
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Rim Rock 50 Mile Trail Challenge
The Rim Rock 50 Mile Trail Challenge is a trail ultramarathon held in Napa, California, using Skyline Wilderness Park and nearby open space preserves including the Suscol Headwaters Trail system. The course is routed as roughly two large loops plus a shorter final loop; solo runners complete about 51 miles total.
Distances:
- 50 miles solo, roughly 51 miles total
- ~25 miles single-loop option
The route uses rugged park trails, oak-covered ridgelines, exposed sections, and segments of the Bay Area Ridge Trail. Trail conditions and final routing may be modified before race day due to terrain or permitting. Aid stations are placed on course and will offer water, electrolyte drinks (Skratch and Cure Hydration noted), GU gels, fruit, PB&J sandwiches and other standard ultra fare. The event is run as cupless; runners must carry a reusable cup, bottle, or hydration pack. Refill support is available at aid stations and reusable cups may be available for purchase.
Crew and pacer rules are specified: crew access is allowed at the Start/Finish and Lake Marie Aid Station only; crew are not allowed at some aid stations. Pacers are allowed for solo 50 mile runners after the first loop and must carry their own nutrition. Drop bags are staged near the start/finish area.
Entry fees are non-refundable and non-transferable; a tiered race credit policy applies in certain notice windows. Registered runners receive a dry wick collared shirt and finishers receive a trucker hat; other awards and swag conditions are noted by the organizer. Visit the organization's website for the most recent information.
