Trail Running calendar near Napa 2025-2026

The Calero Trail Run - Spring takes place at Calero County Park in San Jose, California, offering a variety of distances including 50K, marathon, 25K, half marathon, 15K, 10K, 5K, mile, and a kids run. The course features diverse terrain with single track trails, hills, dirt paths, oak trees, and pa..

The Sonoma Coast Trail Runs, presented by SkyBreaker Racing, take place in Sonoma Coast State Park near Duncans Mills, California. The event offers four distances: 50K, Trail Marathon, 30K, and Half Marathon, featuring challenging elevation gains from 2,800 to 7,000 feet. Runners traverse scenic tra..

The Wildcat Half Marathon, held in El Sobrante, California, is a trail running event organized by Brazen Racing. It features a half marathon, 10K, and 5K distances, welcoming runners, hikers, and walkers alike. The race takes place in Wildcat Canyon Regional Park, offering spectacular 360-degree vie..

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 views of Lake Chabot, Mt. Diablo, and the San Francisco Bay.The Half Marathon course is a h..

The Cinderella Trail Run is an exciting running event taking place in Oakland, California, featuring a variety of race distances including a Half Marathon, Marathon, 8K, 30K, 50K, and a free Kid's Run for children aged 6 and under. Set in the scenic Joaquin Miller and Redwood Regional parks, partici..

The SF Half Day is a unique running event taking place in San Francisco, featuring various race formats including 3-hour, 6-hour, and 12-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 and..

The China Camp Trail Run, held at China Camp State Park in San Rafael, California, offers 5K, 10K, and half marathon distances. Set in a historic area once home to a Chinese shrimp-fishing village, the race features scenic single-track trails with views of Mt. Tamalpais, San Pablo Bay, and San Franc..

The Mississippi Bar Trail Run, hosted by the Fair Oaks Recreation & Park District, is an annual trail running event held in Fair Oaks, California, on the north shore of Lake Natoma. The race features scenic courses through wetlands, oak-studded bluffs, and historic gold mining terrain. Participants..

The Skyline Ridge Trail Run, held in La Honda, California, offers two distances: a 50K ultramarathon and a 21K half marathon. The courses traverse the scenic Skyline Ridge, Russian Ridge, and surrounding open space preserves, featuring diverse terrain including narrow hiking trails, ranch roads, eve..

Dirt Circus - San Francisco is a free community running event held in San Francisco, California, celebrating local trail running culture. Organized by UltraSignup, this one-day festival features a social group run with options of 3.2 or 4.5 miles, welcoming all paces and encouraging participants to..

The Angel Island Half Marathon, hosted by Urban Coyote Racing, takes place at Ayala Cove in Angel Island State Park, Marin County, California. This unique event offers both a half marathon and a 5-mile race, with participants enjoying stunning 360-degree views of the San Francisco Bay. The course fe..

The Woodmonster Trail Race is a challenging 10-mile trail run held in Oakland, California, starting and finishing at the Chabot Space & Science Center. The course features a mix of hills and single-track trails, including the notorious Woodmonster climb, known for its steep and demanding ascent. Run..

The Rock the Loch Half Marathon is a running event taking place from June 27 to June 30, 2025, at Lake Chabot Regional Park in Castro Valley, CA. Participants can choose to run in person or virtually, with options for a half marathon, 10K, and 5K distances. The event promises a scenic trail run, com..

The Bay 2 Bankers 10K is a unique running event held in San Francisco, starting near the iconic Ferry Building. Now in its 13th year, the race features a mystery theme celebrating the classic vibes of the city. Participants run through various historic neighborhoods, navigating from checkpoint to ch..

The Dirty Dozen Run is an annual endurance trail running event held at Point Pinole Regional Shoreline in Richmond, California. Scheduled for July 12, 2025, it features 12-hour, 6-hour, and 3-hour races on a scenic 3.37-mile loop composed mostly of dirt fire trails. The course offers expansive shore..

The Muir Woods Mountain Challenge, held at Mt. Tamalpais State Park near Stinson Beach, California, offers trail runs of 10K, half marathon, and 30K distances. The course features a challenging 2,000-foot climb early on, scenic ridge-line views of Stinson Beach and the Pacific Ocean, and technical s..

Blood, Sweat & Beers is a trail running event held in Auburn, California, nestled in the scenic American River Canyon. The race offers two challenging distances: a Long Course of 10.5 miles with over 2,470 feet of elevation gain and loss, and a Short Course of 5.9 miles with approximately 860 feet o..

The Calero Hills Trail Fest is a trail running event held at Calero County Park in San Jose, California. It offers a variety of race distances including a marathon, 30K, half marathon, 10-mile, 10K, and 5K. The courses feature challenging ascents and descents through scenic old oak groves, single tr..

The Folsom 100 is an exhilarating 100-mile ultramarathon that takes place around Folsom Lake, California. Scheduled for August 1, 2025, this challenging race features a point-to-point course with a single out-and-back section. Participants have 34 hours to complete the loop, which includes stunning..

The Rodeo Valley Trail Run, held in the scenic Marin Headlands near Sausalito, CA, offers trail races of 8K, Half Marathon, 30K, and 50K distances. Starting near historic Fort Cronkhite and Rodeo Beach, the course features challenging steep climbs and descents along coastal trails with stunning view..