Trail Running calendar near Fairfax 2024-2025

The Lake Sonoma 100 Miler is a unique and exciting trail running event held in Geyserville, California. This challenging race features approximately 26,000 feet of elevation gain over 100 miles of predominantly singletrack terrain, making it suitable for seasoned trail runners. The event fosters a f..

The Jed Smith Ultra Classic is a premier running event organized by the Buffalo Chips Running Club, set to take place on February 1, 2025. This 47th edition features multiple race distances, including 50 miles, 50K, marathon, 30K, and half marathon, catering to runners of all levels. The course is U..

The Golden Gate Trail Run, set for February 1, 2025, in Sausalito, CA, offers 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 Coast and the Marin Headla..

The Montara Mountain Trail Run is a scenic 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 backdrop of the beautiful Coasta..

The Sanborn Trail Challenge is an exciting running event held in Sanborn Park, Saratoga, CA, featuring a variety of distances including a Half Marathon, 8 Mile, 4 Mile, Mile, and a Kids Run. The course is predominantly single track trail, offering a challenging and technical experience amidst a lush..

The Marin Ultra Challenge is a premier long-distance trail race held in Marin County, featuring a 50 Mile and a 50K course. Celebrating its 11th edition, the event showcases some of the most scenic trails in the region, including the Marin Headlands, Mt. Tamalpais, and Muir Woods.Participants can ex..

The Race to the Top of Mt. Umunhum is a half marathon trail challenge set within Almaden Quicksilver Park and Sierra Azul Open Space Preserve in San Jose, CA. Participants will experience a scenic point-to-point course, with a six-hour time limit to complete the race.The event includes registration ..

The Bad Ass Backyard Ultra, a collaboration between Skybreaker Racing and Auburn Area Trail Runners, is set in Dry Creek Parkway, Rio Linda, CA. This unique running event, established in 2023, follows the traditional backyard ultra format where participants have one hour to complete a 4.16-mile loop..

The Big Alta is an exciting trail running event taking place in Marinwood, California, organized by Freetrail and Daybreak Racing. Participants can choose between two challenging single-loop courses: a 50K and a 28K, both offering breathtaking views of the San Francisco Bay Area. The routes feature ..

The Napa Valley Trail Marathon will take place in Calistoga on Saturday 22 March 2025. You can run between 10 and 26 miles.

The Redwood (Spring) Trail Run, scheduled for March 22, 2025, in Oakland, CA, offers a variety of race distances including a 5-mile, Half Marathon, 30K, Marathon, and 50K, along with youth events for different age groups. Participants will enjoy scenic trails through Redwood Regional Park, featuring..

The South Hills Single Track Trail Run - Spring takes place at Calero County Park in San Jose, CA, featuring a variety of distances including a 50K, Trail Marathon, Half Marathon, and shorter options down to a Kids Run. Participants can expect a challenging course with scenic single track trails, hi..

The Lag Bon 10K is a trail running event set in the scenic surroundings of Marin County, California, aimed at raising awareness and funds for the global water crisis. Participants will navigate a moderately challenging course featuring stairs, bridges, and natural terrain, with an elevation gain/los..

The Golden Gate Headlands Marathon will take place in Mill Valley on Saturday 5 April 2025. You can run between 10 and 26 miles.

The Santa Teresa King Richard Annual Trail Run is a heartfelt event held at the Pueblo Day Use Area in Santa Teresa County Park, San Jose, CA. This running event features multiple distances, including a Half Marathon, 10 Mile, 10K, and 5K, catering to various skill levels. The race honors Richard Li..

The Annadel Half Marathon is a non-profit fundraising event held in Sonoma County, featuring a challenging course designed for experienced trail runners. Over the past 14 years, the event has successfully raised funds to enhance the beauty of the local park. The Half Marathon course includes over 1,..

The SPASM Lake Chabot Trail Run is a diverse running event taking place at Lake Chabot Regional Park in Castro Valley, CA. 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 and und..

The Romancing the Island Half Marathon will take place in Belvedere Tiburon on Saturday 12 April 2025. You can run between 10 and 13 miles.

The Woodside Crossover is a running event taking place in Woodside, California. Participants can choose to compete in a 50K race, which promises a challenging and scenic experience. The event is set against the backdrop of the beautiful California landscape, making it an appealing choice for both se..

The Lake Sonoma 50 is a premier running event taking place on April 12, 2025, in Healdsburg, California. It features three main races: the challenging 50-mile course, a marathon that loops around Lake Sonoma, and the Trail Sisters Women's Half Marathon. Participants can expect scenic routes with rol..