Trail Running calendar near Orinda 2025-2026

The Muir Woods Marathon, held annually, offers a challenging trail running experience through the scenic landscapes of Muir Woods and Stinson Beach, California. Participants can choose from three distances: a full marathon, a half marathon, and a 7-mile run. The course features steep climbs, wooden..

The Grizzly Peak Trail Run, scheduled for May 10, 2025, in Berkeley, CA, offers a variety of race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The event starts at Lake Anza and traverses the scenic trails of Tilden Regio..

The Nitro Trail 2025 is an exciting running event taking place at Point Pinole Regional Shoreline Park in San Pablo, California. Participants can choose from three race distances: a half marathon, 10K, and 5K, making it suitable for runners of all levels. The event celebrates the park's transformati..

The Quicksilver Endurance Runs, taking place in San Jose, CA, features both 50K and 100K races on scenic, challenging trails. Celebrating its 40th edition, the event offers runners a chance to experience beautiful oak forests, meadows, and stunning views of the Santa Clara Valley and Santa Cruz Moun..

The 13 Mile Trail Race Top Down is a half marathon event taking place in San Jose, California, on May 17, 2025. The race features a scenic course that traverses two beautiful parks: Almaden Quicksilver Park and Sierra Azul Open Space Preserve. Participants will be transported to the starting point a..

Trailquake is an exciting running event taking place in Saratoga, California, featuring a half marathon, 10K, and 5K race. Set against the stunning backdrop of redwoods and pines, participants can enjoy beautiful trails while engaging in a challenging yet rewarding experience. The event welcomes run..

The Napa Wilderness Trail Runs, hosted by Bay Trailrunners, takes place at Skyline Wilderness Park and offers a variety of trail running distances, including 40 miles, 50K, 30K, half marathon, and 10K. This event caters to all levels of runners, from seasoned ultra-marathoners to beginners. Particip..

Run for Amma is an annual charity running event held in Los Gatos, California, aimed at raising funds and awareness for cancer research. Participants can choose from three race distances: 50K, 30K, and 10K, with all proceeds benefiting the UCSF Julia Carnevale Lab. The event emphasizes community inv..

The Pacifica Foothills Trail Run, scheduled for May 17, 2025, takes place in San Pedro Valley County Park, Pacifica, CA. This scenic event features three race distances: 10K, Half Marathon, and 30K, all set against the backdrop of the Santa Cruz Mountains. Participants will navigate moderately techn..

The Sonoma Coast Trail Runs, organized by SkyBreaker Racing, is a scenic running event set in the stunning Sonoma Coast State Park in Northern California. Participants can choose from various distances, including a 50K, Trail Marathon, 30K, and Half Marathon, all featuring breathtaking views of the..

The Calero Trail Run - Spring is an exciting trail running event held at Calero County Park in San Jose, CA. Participants can choose from various distances, including a 50K, marathon, 25K, half marathon, 15K, 10K, 5K, and a kids run. The course features scenic single tracks, hills, and dirt paths, m..

The Wildcat Half Marathon, scheduled for May 31, 2025, in El Sobrante, California, features a scenic trail race with options for a half marathon, 10K, and 5K. Participants can enjoy breathtaking 360-degree views of the Bay Area, including landmarks like the Golden Gate Bridge and Alcatraz. The event..

The 2025 Lake Chabot Trail Challenge features a Half Marathon and a 5K run, taking place in Castro Valley, California. This annual event, now in its 41st year, is popular among trail runners and offers scenic courses with views of Lake Chabot, Mt. Diablo, and the San Francisco Bay.The Half Marathon..

The Cinderella Trail Run is an exciting running event scheduled for June 1, 2025, in Oakland, California. Participants can choose from various distances, including an 8K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under. The scenic course winds through..

The Mt Umunhum Ultras is an exciting trail running event set in the scenic Santa Clara Valley and Sierra Azul Open Space Preserve. Participants can choose from various distances, including a challenging 52-mile ultra, a 50K, and shorter races like a 5K and 10K. The course features over 15,000 feet o..

The Mississippi Bar Trail Run, organized by the Fair Oaks Recreation & Park District, is an annual trail running event set in the scenic wetlands and oak-studded hills along the north shore of Lake Natoma. Participants can choose between a 5K and a 10K course, both showcasing the area's unique natur..

The China Camp Trail Run is an exciting running event taking place at China Camp State Park in San Rafael, California. Scheduled for June 7, 2025, participants can choose from three distances: 5K, 10K, and a Half Marathon. The scenic courses feature twisting single-track trails with stunning views o..

The Skyline Ridge Trail Run is an exciting running event taking place in La Honda, California, featuring two challenging distances: a 50K and a 21K. This event is designed for trail running enthusiasts looking to test their endurance and enjoy the scenic beauty of the surrounding landscape. Registra..

The SF Half Day is a unique running event taking place in San Francisco, featuring various race durations including 12-hour, 6-hour, and 3-hour options for both solo participants and teams. The course is a scenic one-mile loop around Crissy Field, offering stunning views of the Golden Gate Bridge an..

Dirt Circus - San Francisco is a vibrant community running event set to take place in June 2025. Organized by UltraSignup, this festival celebrates local races and the running community, featuring a social run, food, and a raffle with exciting prizes. Participants can enjoy a casual group run with o..