Trail Running calendar near Napa 2026-2027

Live and virtual 5K, 10K and half marathon at Lake Chabot Regional Park in Castro Valley, June 26 to 29, 2026. Courses mix paved and trail sections with aid stations; live participants receive a shirt, handcrafted woodallion and beer sample..

The Bay 2 Bankers 10K will take place in Crissy Field East Beach on Saturday 4 July 2026. You can run between 5 and 10 kilometers.

Trail races on Mt. Tam near Stinson Beach offering 10K, half marathon, and 30K courses with steep climbs, technical single-track, cupless aid stations, chip timing, and a 300-runner capacity.

Trail races in Auburn, CA on July 26, 2026 with long and short courses across single-track mountainous trails, canal sections and dirt roads. Post-race items include a tech shirt, finisher medal, beer for age 21 or older and food.

Trail races at Rodeo Beach in the Marin Headlands offering 8K, half marathon, 30K and 50K on coastal singletrack and fire roads; chip timed, cupless, capacity 350.

One of America's oldest 50k races loops through East Bay parks. It's known for strong community support and a post-race plant-based BBQ. The event happens every August at Lake Chabot Marina.

Bear Creek 2026 offers a hilly half marathon, 10K, and 5K on August 8 in Lafayette, CA. The scenic trail course features beautiful views and a rewarding downhill finish. All finishers get a custom medal and shirt, and walkers are welcome.

A single loop 50K ultramarathon in Muir Beach, California on Saturday, August 15, 2026. The course uses notable Marin trails, includes about 6500 feet of elevation gain, and features coastal and Bay Area views.

An orienteering style 5K and 10K in San Francisco where solo runners or teams of up to five use a custom map to visit up to 30 checkpoints, answer simple multiple choice questions, and enjoy refreshments at the finish.

Tackle the legendary Double Dipsea, a 13.7-mile out-and-back on the historic Dipsea Trail from Stinson Beach. This unique race features a handicapped start, putting all runners on a single-track course of constant passing. Experience the hi..

Trail run in Huddart Park near Woodside, California on August 30, 2026 offering distances from 8K to 50K plus a free kids 50 yard dash. Courses run on single track and dirt roads with aid stations every 5 to 9 miles.

Trail races at Mammoth Bar OHV Area in Auburn on September 6, 2026. Single-track and double-track courses include steep climbs, descents and views of the American River Canyon across Half Marathon and 10K options.

Diablo Trail Run on September 6, 2026 in Clayton CA offers distances from a 4 mile Mitchell Canyon course to a 50K, plus a free kids 50 yard dash for age six and younger. Courses use dirt roads and single track with aid stations every 3 to..

Trail races on September 12, 2026 in Tilden Regional Park and Wildcat Canyon offering 50K, 35K, half marathon and 10K courses with marked trails, aid stations every five to seven miles, and a cupless format requiring reusable cups or bottle..

Explore scenic trails along Folsom Lake at the Gold Rush Growler Trail Runs. Choose between a 10-mile or 5K course starting at Granite Beach. Finish with a custom beer glass, a local IPA, and a hearty post-race meal.

The Rocky Ridge 2026 offers a challenging half marathon trail run in the Las Trampas Wilderness, plus 10K and 5K options. It's the finale for the Ultra Half Marathon Series and supports the East Bay Regional Parks Campership Program. Partic..

A multi distance trail event at Lake Chabot Regional Park in Castro Valley featuring a 100k, a 50 mile, and a marathon. All races are UTMB Index events and the 50 mile is part of the Pacific USATF Grand Prix.

Explore the shaded redwood groves and challenging, flowy singletrack of Sanborn County Park. This trail event on September 27, 2026, offers 10k, half marathon, and 50k distances through the Santa Cruz Mountains.

Trail running event in Auburn, California on October 3, 2026 offering half marathon, 12K and 5K distances. The half course follows the Western States Trail and crosses No Hands Bridge, with start and finish at Overlook Park.

Trail races in Auburn, California in October 2026 run along the American River Canyon with 50K, half marathon, and 5 mile options. Postrace items include a commemorative cider glass, a Ponderosa Cider pour for those 21 plus, and age group a..