Trail Running calendar near Angwin 2025-2026

The Star City San Bruno Mountain Half Marathon & 5K, held in Brisbane, California, offers a scenic trail running experience with spectacular views of the Pacific Ocean, San Francisco Bay, and the city skyline. The half marathon course is 93% trail, featuring 2,400 feet of elevation gain and a thrill..

The Auburn Half Marathon, held in Auburn, California—known as the Endurance Capital of the World™—offers trail running on the scenic Western States Trail. Scheduled for October 4, 2025, the event features a half marathon, 12K, and 5K races starting from Auburn Overlook Park and winding through the A..

The SFRC Women's Headlands Half Marathon is a scenic trail running event held in the Marin Headlands, starting and finishing at Rodeo Beach near Sausalito, California. The race features a challenging 12.6-mile half marathon with 2,494 feet of elevation gain, alongside a 6-mile 10K option. Both cours..

The Reservoir Dogs Trail Run in Orinda, CA, is a scenic trail running event held on October 4, 2025, featuring 10K, Half Marathon, and 35K distances. It uniquely circumnavigates the Briones Reservoir on EBMUD trails, offering a mix of rolling hills, tree-covered single-track, and open fire roads wit..

The Tails & Trails Charitable Walk/Run takes place in Windsor, California, at 11010 Estate Lane. This event features two race options: a 5K run and the Dogwood Dash. It is organized to support charitable causes, creating a community-focused and friendly atmosphere.While specific details about the co..

The Mile Madness Endurance Run is a multi-day ultrarunning event held at Sunset Whitney Recreation Area in Rocklin, California. The course is a professionally measured 1.05-mile loop featuring 85% dirt trail and 15% paved path, with about 62 feet of elevation gain per lap. Runners can choose from va..

Granite Head 2025 is a trail running event held in Granite Bay, California, featuring two challenging courses: a 6.6-mile short course and an 11.2-mile long course. Both races start and finish at Granite Beach, offering scenic trail running experiences. Participants receive a unique tech shirt and e..

Go Wild Marin 4 Hr is an adventurous trail and wilderness scramble held on the Tiburon Peninsula in Corte Madera, California. Participants compete individually or in teams of up to five, using a custom map to locate as many as 24 checkpoints scattered across trails and wild areas within a four-hour..

The Ruth Anderson Memorial Endurance Run is an ultradistance race held annually in San Francisco, California, at scenic Lake Merced. The course features a mostly flat, USATF-certified 4.48-mile loop around the lake, combining asphalt paths and groomed dirt shoulders with about 100 feet of elevation..

The Napa Lapa Trail Adventure, hosted by Inside Trail Racing, is a unique time-based trail running event held at Skyline Wilderness Park in Napa, California. Instead of racing a fixed distance, participants run as far as possible within 3, 6, or 12-hour time limits on a challenging 4.16-mile loop fe..

The John Lawson Tamalpa Challenge is a cross-country running event held annually at China Camp State Park in San Rafael, California. The 2025 edition features three races, each approximately 4.2 miles long, primarily on rolling single-track trails with a short stretch on asphalt. The event honors Jo..

The Lake Sonoma 100K and 55K, also known as the California Fall Classic, is a challenging ultramarathon held at Lake Sonoma, California, set amidst the scenic wine country during harvest season. The event features two distances—100 kilometers and 55 kilometers—on demanding courses that traverse mile..

Willow Hills XC is an annual 5K cross country race held at Willow Hill Reservoir Community Park near Folsom High School in Folsom, California. The course features two loops of rolling hills around a water reservoir, providing a challenging and scenic route for runners. Now in its 15th year, the even..

The California Fall Classic at Lake Sonoma is a challenging ultramarathon event held in Healdsburg, California, featuring two distances: 100K and 55K. Set amidst the scenic wine country during harvest season, the courses offer relentless single-track trails with stunning views of Lake Sonoma. The 10..

The Diablo Summit Stomp is a trail running event held in Walnut Creek, California, featuring distances of 30K, half marathon, 10K, and 5K. The courses traverse dirt trails starting from Castle Rock Park and extend into Mount Diablo State Park, with the 30K reaching the summit of Mount Diablo. The ev..

The Haunted Hills 10K in Redwood City is a unique nighttime running event featuring a spooky, fun atmosphere perfect for adults and families. Participants run in teams of 1 to 5, equipped with headlamps or flashlights, as they navigate through wickedly decorated neighborhoods. The course includes 36..

The Oakland Hills Trail Run, held at Redwood Regional Park in Oakland, California, offers three challenging distances: 10K, half marathon, and 35K ultramarathon. Set in a serene redwood forest with towering 150-foot coast redwoods, the course features technical dirt trails and fire roads with signif..

The Napa Fall Wine Country Marathon is an annual trail running event held at Bothe-Napa Valley State Park in Saint Helena, California. Celebrating its 33rd year, the race offers marathon, half marathon, and 10K distances. The course features lush single-track trails with hills, streams, and rocky te..

The Rio Del Lago 100 Mile Endurance Run is a premier ultramarathon held annually in the scenic Sierra Nevada Foothills near Folsom, California, about 40 minutes east of Sacramento. Starting at Beal's Point in the Folsom Lake State Recreation Area, the challenging 100-mile course features diverse ter..

The Oakland Tech 5km Fundraiser Race and 1 Mile Fun Run/Walk is set to take place at Joaquin Miller Park, supporting the Oakland Tech Cross Country and Track Team. This event features a scenic 5K trail run and a 1-mile fun run/walk, designed to cater to both competitive runners and leisurely partici..