Napa Wilderness Trail Runs

Berkeley Trail Adventure takes place in the East Bay’s Tilden Regional Park and Wildcat Canyon, Berkeley, CA. The race offers four distances: 10K, Half Marathon, 35K, and 50K, with elevation gains from about 1,050 to 6,800 feet. Most of the course runs on technical dirt trails and non-technical fire..

JP's Backyard Ultra/Hike is a grassroots ultramarathon and hike held at Skyline Wilderness Park in Napa, California. In its third year, the event features a 3.3-mile loop with 550+ feet of climbing through rocky and shaded trails. Runners and hikers may do 1 to 10 loops, starting together on the hou..

Reservoir Dogs Trail Run in Orinda, CA offers 10K, Half Marathon, and 35K distances with start and finish in the San Pablo Reservoir Recreation Area. The event is notable as the first trail race to completely circumnavigate Briones Reservoir on EBMUD trails, delivering rolling open fire roads, tree-..

Go Wild Marin offers a trail and wilderness navigation challenge in Corte Madera, California, with 2-hour and 4-hour options. Teams of 1 to 5 use a custom map to locate up to 24 checkpoints scattered along trails and wild areas of the Tiburon Peninsula. The event emphasizes exploration and navigatio..

The Napa Lapa Trail Adventure, held at Skyline Wilderness Park in Napa, California, is Inside Trail Racing’s first time-based ultrarun. Runners compete for a set amount of time rather than a fixed distance, choosing to cover as much terrain as possible within 3, 6, or 12 hours. Each loop is about 4...

The John Lawson Tamalpa Challenge is a three-race cross-country event held at Miwok Meadows in China Camp State Park, San Rafael, California. Each 4.2-mile course follows rolling single-track trails with about a quarter-mile on asphalt, starting near the Miwok Meadows gate and finishing in the Miwok..