Trail Running calendar near Clayton 2026-2027

Experience a technical trail race through the redwood groves of Joaquin Miller and Redwood Regional parks. Choose from multiple distances ranging from an 8K to a 50K ultra marathon on accurately measured courses.

Experience a scenic run through Coyote Point Recreation Area with a 5K or 10K event supporting mental health. Enjoy a free community wellness fair featuring local health vendors and family friendly activities.

These trail runs explore the beautiful Sonoma Coast State Park. The courses traverse a scenic ridgeline with ocean views and summit Red Hill. The event will return in 2027 with a planned new location in Monte Rio.

Trail race at Calero County Park in San Jose offering distances from a kids mile to a 50K. Routes feature single track, hills, marked courses and aid stations, and all finishers receive a commemorative medal.

A one-day community running festival in San Francisco featuring a social group run with two casual route options, an expo with vendors and demos, a pancake breakfast, and a raffle; the event is cupless and no dogs are allowed except service..

An annual trail race on the north shore of Lake Natoma in Fair Oaks offering 5K and 10K courses through wetlands, oak bluffs, and historic gold-dredge terrain, with proceeds supporting a local scholarship.

A trail event at Almaden-Quicksilver County Park on June 7, 2025 offering distances from 5K to 50K, steep climbs, marked courses, aid stations, and toilet facilities. The 52 mile race is not held in 2025 and is planned to return in 2026.

Trail runs on Lake Natoma’s north shore in Fair Oaks CA with 5K and 10K courses plus a kids run for under 10s. Hosted by the Fair Oaks Recreation and Park District with proceeds supporting a local scholarship.

Experience the 42nd annual Lake Chabot Trail Challenge featuring a scenic half marathon loop and a paved 5K run. Enjoy views of the San Francisco Bay and Mt Diablo while competing for medals on chip timed courses.

Experience a point to point 100 mile ultramarathon from UC Berkeley to Oakland. This trail race features 18,000 feet of elevation gain through redwood forests and scenic ridgelines with expansive California views.

Experience the scenic trails of Lagoon Valley Park at The Pena Passage. Choose from 30K, 10K, or 5K distances featuring rolling hills and oak groves in a natural setting.

Experience a scenic 5K or 10K run or walk through the flat dirt trails and green hills of Henry W. Coe State Park in Gilroy.

A charitable walk and run at Howarth Memorial Park in Santa Rosa on June 14, 2026, organized with Dogwood Animal Rescue. The event offers a 5K, a virtual any-distance option, and the Dogwood Dash, with registration coming soon.

Experience the scenic trails of Lake Chabot Regional Park with a variety of distances including a 5k, 10k, and half marathon. Enjoy a lively atmosphere with a post-race brewfest and handcrafted finisher awards.

Celebrate the classic vibes of San Francisco with a themed navigation run starting at Ghirardelli Square. Use a custom map to find checkpoints as an individual or in a team of five.

A trail race in Morgan Hill through Rancho Cañada del Oro Preserve with hilly single track, fire roads, creekside oak shade and multiple distance options for runners.

Experience a scenic trail run through ancient Coastal Redwoods and lush river canyons in Santa Cruz. Choose from multiple distances including a 50K and marathon with several river crossings.

Trail races of 10K, half marathon and 30K near Stinson Beach, CA that feature steep climbs, coastal ridge running, and technical single-track through Muir Woods and Mt Tam. Aid stations offer gels, snacks and hydration; 30K has a 6.5 hour l..

Test your limits at Point Pinole Regional Shoreline with three 6 or 12 hour endurance runs on a scenic coastal loop. Enjoy a party atmosphere with an all day picnic and options for individual or team participation.

Trail running at Calero County Park with multiple distances across single track and dirt paths, significant climbs, aid stations and free parking at the park.