Trail Running calendar near Napa 2026-2027

A multi distance trail event in Auburn California from 23 to 26 April 2026 following sections of the Western States Trail. Distances include 161 km, 100 km, 50 km and 25 km and the 100 km awards Western States Golden Tickets.

Trail race at Mt Tamalpais State Park near Mill Valley offering half marathon and 10K courses along Ridgecrest Blvd and the Coastal Trail, limited to 300 participants and featuring aid stations, course markings, and a no headphones policy.

A well-marked *62 mile* trail ultramarathon in the Marin Headlands near Stinson Beach, CA, with over 11,000 feet of climb, a 15 hour 30 minute time limit and a 400 runner field limit. The race emphasizes low-waste practices and community in..

A multi-distance trail event at Browns Ravine Marina on May 2, 2026 featuring 10K, half, 35K and 50K courses on marked single and double track around Folsom Lake. Aid stations are stocked and the event is cupless.

Trail races at Jack London State Historic Park on May 2 2026 include a half marathon and a five mile through vineyards and Sonoma Mountain hills. Aid stations are provided and headphones are not allowed for safety.

Held May 3, 2025 at Almaden Quicksilver County Park, this trail event offers distances from a kids run to 50K on dirt roads and single track, with marked courses, multiple aid stations, drop bag service at the Hacienda and free parking.

A trail run through the forested trails of Pacific Union College offering 26k, 10k, and a 1 Mile Kids Run for ages 7 to 12. The event is cupless, parking is free first come first served, and proceeds support PUC Athletics.

A trail race from Stinson Beach into Muir Woods offering marathon, half marathon and 7 mile options, with technical climbs, ladder and stair sections, marked aid stations, and a field limited to 300 participants.

Experience the scenery of Tilden Regional Park at the Grizzly Peak Trail Run. Choose from various distances including a 50K and marathon starting from the shores of Lake Anza in Berkeley.

Trail ultramarathons in Almaden Quicksilver County Park on May 9 2026, offering a 100K and a 50K with substantial elevation gain, course maps and GPX files, USATF sanctioning, aid stations, volunteer support, swag and a post race party.

A timed half marathon on 9 May 2026 from Quintessa Winery to Yountville in Napa Valley. The finish line Wine Village features live music, Domaine Chandon welcome bubbles and complimentary tastings from multiple wineries.

Celebrate the 24th year of this community event in Los Altos Hills. Run or walk through the Westwind Community Barn and Byrne Preserve on hilly 5K, 10K, or 1 mile courses.

Trailquake is a trail race in Saratoga, California on May 10, 2026 offering 5K, 10K and a half marathon through redwoods and pines. Hikers and walkers are welcome and the half marathon is part of the Brazen Ultra Half Series.

Trail races at Skyline Wilderness Park near Napa offering 50K, 30K, 21K and 10K on routes with Rim Rock climbs and wide valley views. Aid stations are touchless and the event is cupless so runners must bring their own cup or bottle.

A charity trail event at Skyline Ridge Open Space Preserve offering 50K, 30K and 10K options, with elevation profiles and route maps provided; all registration proceeds support UCSF cancer research.

The inaugural Rim Rock 50 Mile Trail Challenge explores Napa's wild trails. Runners will tackle a two-loop course through Skyline Park and the new Suscol Headwaters. This cupless event offers a 50-mile solo or relay option with a 13-hour cu..

A race in El Sobrante on May 16, 2026 offering Half Marathon, 10K and 5K distances plus a remote runner option. Tiered registration fees apply and the event supports the East Bay Regional Parks Campership Program.

Wild Rose Half Marathon & 5K The Wild Rose Half Marathon & 5K takes place in Roseville, California. The event starts and finishes at the Moksa Barrel House on Foothills Boulevard. The event offers three distances: Half Marathon: Th..

A point to point half marathon on May 17, 2025, descending from Mt Umunhum to the Hacienda Entrance in Almaden Quicksilver County Park. The route is about 13.4 miles with aid stations, toilet facilities, marked trails, and a 5.5 hour time l..

Mud Factor Sacramento is a 5K mud and obstacle run at the 300 acre Mahon Ranch in Elk Grove on May 17, 2026. The event includes adult and KIDZ family waves, a festival area with paid spectator access, and required signed waivers.