Trail Running calendar near Livermore 2025-2026

Folsom Lake Sweetwater Trail Run takes place at Folsom Lake State Recreation Area, Salmon Falls Parking Lot in El Dorado Hills, California. The event offers eight distances: Kids Run, 1 mile, 5K, 10K, 9 Mile, Half Marathon, 30K, Trail Marathon, and 50K. The course is 95% single-track with 5% dirt ro..

Pacifica Foothills Trail Run takes place at San Pedro Valley Park, Pacifica, CA. Runners choose among 10K, half marathon, and 30K, all on dirt trails atop Mt. Montara and surrounding foothills.The course is mostly technical single-track with significant elevation gain (approximately 1,200 ft for the..

Brazen Racing's Coyote Hills event takes place at Coyote Hills Regional Park in Fremont, California, offering three distances: 5K, 10K, and a Half Marathon, with walkers welcome. The course blends dirt and paved trails with wooden boardwalks through marshland, delivering bay views and varied scenery..

Fort Ord Trail Run takes place at Fort Ord National Monument in Monterey, California. The event offers three distances: 10K, 25K, and 50K, run mainly on non-technical dirt trails and fire roads, with most climbing toward the end. Elevation gains are approximately 900 ft for 10K, 2,250 ft for 25K, an..

Monterey Ultra is a 50-mile trail ultramarathon held at Fort Ord National Monument and Laguna Seca Recreation Area near Monterey, California. The course combines a 35-mile loop and a 15-mile loop, totaling about 7,080 feet of elevation gain and weaving through wide fire roads, twisting single-track,..

Mt. Umunhum Trail Conquest-Winter is an endurance trail running event in San Jose, California, starting at the Hacienda Entrance of Almaden Quicksilver County Park. Runners can choose 5K, 7 Mile, half marathon, 30K, trail marathon, 50K, and a Kids Run.The 30K climbs Bald Mountain, while the Trail Ma..

Bay Breeze in 2026 offers a scenic bayside challenge in San Leandro, starting and finishing at San Leandro Marina Park (14001 Monarch Bay Dr). The event features three distances: 5K, 10K, and a Half Marathon. Runners enjoy a mostly-flat, easy bayside course that stays close to the water, with romant..

Redtail Ridge at Lake Chabot Regional Park in Castro Valley, CA offers multiple distances: 5K, 10K, Half Marathon, 30K, and 50K. The course unfolds on a mix of moderately technical dirt trails and non-technical fire roads, with some paved sections, and features rolling hills that reward pacing and t..

Montara Mountain Trail Run takes place at San Pedro Valley Park in Pacifica, California. The event offers multiple distances: 10K, Half Marathon, 20 miles, Marathon, 50K, and a free Kids Run. Runners traverse the undisturbed Coastal Mountain Habitat with views of the Pacific, climbing through groves..

Zoom Angel Island is a trail running event on Angel Island, accessible via chartered ferries from Tiburon, California, offering spectacular views of Marin County and San Francisco. Distances include 5 miles, 10 miles, 15 miles, plus a Kids Run (free). The hilly course circles the island and climbs M..

Marin Ultra Challenge is Inside Trail Racing’s premier Marin County trail race in Sausalito, California. It offers two long-distance options: a 50-mile and a 50K. The course starts at Rodeo Beach and winds through the Marin Headlands, Mt.Tamalpais, and Muir Woods, combining coastal vistas, redwood c..

2026 Napa Valley Trail Marathon, Half Marathon & 10K takes place at Bothe-Napa Valley State Park in Saint Helena, California. The event offers three trail distances: marathon, half marathon, and 10K. Runners tackle lush single-track with hills, streams, and rocky sections; the course is marked with..

Redwood (Spring) Trail Run is held at the Chabot Space & Science Center in Oakland, California, featuring multiple distances from 5 miles up to 50K, plus a Half Marathon, Marathon, 30K, a 5K, and several youth events. The course winds through Redwood Regional Park, offering spectacular views along t..

The Western Pacific Marathon event, held at Quarry Lakes Regional Recreation Area in Fremont, California, offers runners a choice of half marathon, 10K, and 5K distances. The course is mostly flat, following the historic Western Pacific Trail, which was originally used in the 1800s to transport grav..

Bad Ass Backyard Ultra (B.A.B.U.) takes place at Dry Creek Parkway in Rio Linda, Sacramento, California. The event uses the traditional backyard ultra format: a 4.16-mile loop with a new loop starting each hour; anyone not in the start corral at the hour is eliminated, and the winner completes the m..

Set in the Marin Headlands, the Golden Gate Headlands Marathon, Half Marathon & 10K starts and finishes at the Historic Gunnery Range in Rodeo Valley, Mill Valley, California. The course traverses scenic single-track trails and fire roads, offering panoramic views of San Francisco Bay, the Golden Ga..

Diablo Trails Challenge is a trail-running event held at 1700 Castle Rock Road, Walnut Creek, CA, in support of Save Mount Diablo. The race offers multiple distances to suit all levels: 50K, half marathon, 10K, and 5K, plus a Remote Runner option. The course traverses Mount Diablo’s open-space trail..

American River Endurance Runs is a three-race ultra series from Folsom to Auburn, California, along the scenic American River Parkway. The flagship AR50 has become the second-largest 50-mile race in the United States, attracting veterans and newcomers, with companion 25- and 10-mile events finishing..

Romancing the Island Half Marathon & 10K takes place at Angel Island State Park, Belvedere Tiburon, California. The course is a hilly loop around the island: the half marathon runs the loop twice, the 10K once. Runners enjoy panoramic views of the Golden Gate Bridge, San Francisco, Alcatraz, the Eas..

Located in Calistoga, California, the Napa Valley Endurance Run comprises four trail distances: 50K, 35K, half marathon, and 10K. The loop starts and finishes on the Calistoga Fairgrounds' Great Lawn and climbs into Robert Louis Stevenson State Park, culminating at Mount St. Helena.The 50K is renown..