Trail Running calendar near Duncans Mills 2025-2026

The HOKA Black Canyon Ultras Training Day will take place in Mill Valley on Saturday 25 January 2025.

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 Golden Gate Trail Run is an exciting running event taking place in Sausalito, California, featuring a variety of race distances including an 8K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. Participants can enjoy stunning views of the Pacific ..

The Lake Sonoma 100 Miler is an exciting endurance running event set in Geyserville, California, featuring a challenging 100-mile course with approximately 27,000 feet of elevation gain. The race emphasizes a festival-like atmosphere, complete with live music, food trucks, and wine tasting at the st..

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 through beautiful trails, majestic oaks, and grasslands using a custom map to locate up to 20 checkpoints within a 2-hour timeframe. This event emp..

Redtail Ridge is a trail running event hosted by Inside Trail Racing, featuring distances of 10K, Half Marathon, 30K, and 50K. Set in the scenic Lake Chabot Regional Park in Castro Valley, CA, the course offers a mix of eucalyptus forests, grassy meadows, and lakeside paths, making it accessible for..

The Bay Breeze event, taking place at San Leandro Marina Park, features a scenic half marathon, 10K, and 5K run along the picturesque San Francisco Bay. This race is designed for all levels of runners and walkers, offering a mostly flat course that is ideal for setting personal records. Participants..

The Montara Mountain Trail Run is an exciting running event taking place in Pacifica, California, featuring a variety of race distances including a 10K, Half Marathon, 20-mile, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. Set against the stunning backdrop of Montara ..

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, California, featuring 50-mile and 50K events. Celebrating its 11th edition in 2024, the race showcases some of the region's most stunning trails, including the Marin Headlands, Mt. Tamalpais, and Muir Woods.Partici..

Zoom Angel Island is a running event taking place on Angel Island, California, featuring multiple race distances: 5 miles, 10 miles, and 15 miles, along with a free Kid's Run for children aged 6 and younger. The event offers scenic trails with stunning views of Marin County and San Francisco. Partic..

The Rattlesnake Ramble is a running event featuring a 5K, 10K, and Half Marathon, available in both live and virtual formats. Scheduled for March 14-17, 2025, the event takes place at China Camp State Park in Santa Venetia, California. Participants can choose from various trail courses, each offerin..

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 Redwood (Spring) Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a Half Marathon, 5-mile, 30K, Marathon, and 50K, along with youth categories and a free Kid's Run. Set against the stunning backdrop of Redwood Regional Pa..

The Lag Bon 10K is a trail running event taking place in Fairfax, California, aimed at raising awareness and funds for the global water crisis through the Safe Water Now program by Evidence Action. Set against the scenic backdrop of Marin County's reservoirs, the course features a mix of technical t..

The Golden Gate Headlands Marathon, Half Marathon, and 10K is a scenic running event taking place in the Marin Headlands, California, on April 5, 2025. Celebrating its 40th annual edition, the race offers participants breathtaking views of the San Francisco Bay, the Pacific Ocean, and the iconic Gol..

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 runners of all experience levels, from beginners to seasoned ultra-runners. A portion of t..

The Annadel Half Marathon, along with its 10K and 5K events, is a prominent non-profit fundraising race held in Sonoma County. Over the past 14 years, it has successfully raised funds to enhance the beauty of the local park. The challenging Half Marathon course features over 1,500 feet of elevation ..

The 2025 Romancing the Island Half Marathon & 10K is set to take place at Angel Island State Park in Belvedere Tiburon, California. This annual event, now in its 34th year, features a scenic loop trail that offers breathtaking views of the Golden Gate Bridge, San Francisco, and surrounding areas. Pa..

The SPASM Lake Chabot Trail Run is a diverse running event taking place at Lake Chabot Regional Park in Castro Valley, California. Scheduled for April 12, 2025, it features multiple race distances including an 8K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6..