Trail Running calendar near Fairfield 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 2025 Escape from Folsom event features a 10-mile and a 5K race, both set along scenic trails by Folsom Lake. Participants will receive a finisher medal and have the option to purchase a soft-cotton race shirt. Aid stations will be available throughout the course, providing hydration and energy s..

FOURmidable is an exciting trail running event set in the stunning Sierra Nevada foothills of Auburn, CA. Participants can choose from various distances, including a 50K, 35.5K, half marathon, and 13K, all designed to challenge endurance while showcasing the area's natural beauty. The 2024 edition f..

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 Lost Trail Half Marathon, organized by TBF Racing, takes place at Granite Beach, Folsom Lake SRA. This scenic event features a well-marked 13.1-mile course alongside beautiful lake views and vibrant wildflowers, complemented by five aid stations. Participants can also join the 5K run, which offe..

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 Way Too Cool 50k will take place in Cool on Saturday 1 March 2025. You can run between 10 and 50 kilometers.

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 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 Folsom Lake Southside Trail Run offers a scenic and challenging experience for runners of all levels, featuring a variety of distances including 50K, Marathon, 25K, Half Marathon, 7.5 Miler, and 5K. Set against the picturesque backdrop of Folsom Lake and the Sierra Mountains, the race primarily ..

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

The Knickerbocker Canyon Trail Run, taking place in Auburn, CA, offers a challenging and scenic experience for runners of all levels. Participants can choose from four distances: 5K, 10K, Half Marathon, and 35K, all set along the historic Western States trail. Runners will encounter stunning views, ..

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 Folsom Lake Falcon Crest Trail Run is a scenic running event set in the picturesque foothills of El Dorado Hills, California. Participants can choose from four distances: 5K, 10K, 8 Mile, and Half Marathon, all featuring a mix of fast and technical single-track trails alongside Folsom Lake. The ..

The Rattlesnake Dick event features 50K, 25K, and 10K races set in Cool, CA, with a generous 10-hour cut-off for all distances. Participants will receive a stylish race shirt and a high-quality finisher's medal for completing their race. The event is inspired by the legend of Rattlesnake Dick, a not..

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 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..