Embark on an unforgettable journey through the heart of Napa Valley with the inaugural Rim Rock 50 Mile Trail Challenge on Saturday, May 16, 2026. Starting and finishing at Skyline Wilderness Park in Napa, CA, this challenging event offers both a solo 50-mile option and a 50-mile relay, inviting runners to explore the region's breathtaking natural beauty and rugged terrain. The course features two approximately 26-mile loops, winding through Skyline Wilderness Park, the scenic Napa Open Space Preserve, and venturing into the pristine, rarely accessed Suscol Headwaters Trail System. Expect tough climbs, a mix of shaded oak forests, and exposed ridgelines, offering stunning panoramic views stretching from Mount St. Helena all the way to San Francisco Bay. The course is rated as hilly, with an elevation gain estimated between 2500-7500 feet over 50 miles.

Runners can anticipate typical race day conditions with comfortable highs around 73°F and lows near 48°F, with only a 2% chance of precipitation, making for ideal trail running weather. Four well-stocked aid stations per loop will support athletes with classic ultra-running fuel including chips, cookies, PBJ, bananas, gels, water, soda, and Tailwind. Crews are welcome at the start/finish area and the Lake Marie Aid Station, with pacers permitted for solo 50-mile runners on the final 25-mile loop. This event promises to be more than just a race; it's a bold new endurance experience, highlighting newly opened trails and contributing to the conservation of vital regional resources like the Bay Area Ridge Trail.

With a 13-hour total course cut-off and a vibrant post-race celebration featuring burrito wraps, salads, and adult beverages, the Rim Rock 50 Mile Trail Challenge offers an exceptional opportunity to push your limits amidst the stunning landscapes of Napa Valley. Secure your spot and be a part of history at this exciting new event.