Napa Wilderness Trail Runs

Napa, United States • 17 May 2025

The Napa Wilderness Trail Runs, hosted by Bay Trailrunners, takes place at Skyline Wilderness Park and offers a variety of trail running distances, including 40 miles, 50K, 30K, half marathon, and 10K. This event caters to all levels of runners, from seasoned ultra-marathoners to beginners. Participants can enjoy scenic views along the trails, with aid stations providing support throughout the course. The event promotes a cupless racing environment, encouraging runners to bring their own hydration containers. Post-race, runners can enjoy food and drinks, and camping options are available at the park for those wishing to extend their experience. Visit the organization's website for the most recent information.

Race information

40 mi
40 Mile
50 km
50k
30 km
30k
13 mi
Half Marathon
10 km
10k
Visit the organization's website for the most recent information.
Trail runs nearby

The China Camp Challenge is a running event held at China Camp State Park in San Rafael, California. Participants can choose from three distances: a 5K, 10K, or half marathon, all set against the backdrop of scenic trails and views of the Bay Area. The park offers a natural environment with a canopy..

The Go Wild! Lime Ridge 2 Hour event invites participants to explore the scenic Lime Ridge Open Space in Walnut Creek, CA. Teams of 1 to 5 will navigate using a custom map to locate up to 20 checkpoints within a two-hour timeframe. This adventure combines trail running and wilderness scrambling amid..

The Napa Valley Trail Marathon, Half Marathon, and 10K is a scenic running event taking place in Bothe-Napa Valley State Park, California, on March 22, 2025. Celebrating its 33rd year, the event features challenging courses with beautiful landscapes, including hills, streams, and rocky trails. Parti..

The Big Alta is an exciting trail running event taking place in Marin County, California, organized by Freetrail and Daybreak Racing. Participants can choose between two challenging distances: a 50K and a 28K, both featuring scenic single-loop courses that showcase breathtaking views of the San Fran..

The Lag Bon 10K is a trail running event taking place in Fairfax, California, on March 30, 2025. This moderately challenging course features beautiful trails around Marin County's reservoirs, with an elevation gain/loss of approximately 400 feet. The event aims to raise funds and awareness for the g..

The Diablo Trails Challenge is a running event taking place on Mount Diablo, featuring multiple race distances including a 50K, half marathon, 10K, and 5K. Scheduled for April 5, 2025, this challenge caters to participants of all skill levels, from beginners to experienced ultra-runners. A portion o..