Trail Running Calendar California 2025-2026

Leona Divide, staged at The Lakes Community Center in Lake Hughes, CA, is a multi-distance ultramarathon organized by KH Races. The weekend offers five options: 100-mile, 100K, 50-mile, 50K, and 30K. The 100-mile and 100K routes are Western States 100 Mile qualifiers, while the 50-mile race awards a..

Badwater Salton Sea, presented by Mount to Coast, is an extreme team ultramarathon in Southern California’s deserts. Based in Borrego Springs, the 81-mile route runs from Salton City (below sea level) to Palomar Mountain (above 5,500 ft), with more than 9,000 ft of total elevation gain. About eight..

The Mendocino Coast 50K is a trail run on Northern California’s Mendocino Coast. The course passes through coastal and forest terrain and includes a river, ocean views, redwood forest sections, and a waterfall. The race start location is Big River State Beach in Mendocino, California. News items l..

The Canyons Endurance Runs will take place in Auburn from Friday 24 April 2026 to Saturday 25 April 2026. You can run between 25 and 161 kilometers.

Mt Tam Wild Boar Half Marathon & 10K takes place in Mt Tamalpais State Park, Mill Valley, California. The coastal ridge course blends rolling single-track with paved sections, offering views of the Pacific Ocean, Bolinas Lagoon, and Marin County watershed. Runners traverse Ridgecrest Blvd along Boli..

Coyote Two Moon takes place in the Los Padres National Forest near Ojai, California. The event offers multiple distance options: 100 miles, 100K (roughly 62 miles), 55 miles, 55K (34 miles), 30K (about 18 miles), and 10K (about 6.5 miles); a brand-new 50K distance is also noted. The course features..

San Diego, California hosts a memorial trail event on the Los Peñasquitos Canyon Trail. This is not a race: there is no support, no course markings, and no timing. Participants run on their own, choosing any portion of the clockwise route with a seven-hour limit.The event starts and finishes at the..

The Miwok 100K ultramarathon is staged in Marin County, California, with the start/finish in the town of Stinson Beach, near San Francisco. The race covers 100 kilometers on single-track trails and dirt roads, featuring 11,800 feet of elevation gain, a cup-less policy since 2013. Runners are treated..

The Tails & Trails Charitable Walk/Run takes place in Windsor, California, at 11010 Estate Lane. This event offers a 5K run and a Dogwood Dash, with a virtual option allowing participants to complete any distance. The event supports a charitable cause and provides a welcoming atmosphere for runners..

San Diego 100 is a challenging 100-mile ultramarathon in Lake Cuyamaca, California, starting and finishing at the Lake Cuyamaca Recreation Area south parking near Julian. The loop course is about 90% single-track mountain trails, crossing four San Diego east county recreation areas and segments of t..

The 2026 Stinson Beach/Muir Woods Marathon, Half Marathon & 7 Mile is a challenging trail event launching from Stinson Beach Park in California. Runners follow the Dipsea Trail into Muir Woods, ascending to Steep Ravine where a wooden ladder and natural stairways test movement among towering redwood..

The Waves & Whales 5K Trail Run is an annual event held on the Mendocino Coast in Point Arena, California. The scenic course starts behind City Hall in a conifer forest near Highway 1, follows coastal bluffs along the Point Arena-Stornetta Unit of the California Coastal National Monument, and loops..

The Boney Mountain Trail Run is a scenic trail running event held in the Santa Monica Mountains, starting at Rancho Sierra Vista | Satwiwa National Park in Newbury Park, California. It features a challenging half-marathon course that includes creek crossings, single-track climbs, and stunning ocean..

Trailquake 2026 is Brazen Racing’s trail event at Sanborn Park, 16055 Sanborn Rd., Saratoga, CA. It offers 5K, 10K, and half-marathon distances. Runners traverse redwoods and pines on spectacular single-track trails, with ascents to peaks that reward you with panoramic views.The course suits all lev..

Run for Amma is an annual charity running event held at Skyline Ridge Open Space Preserve in Los Gatos, California, celebrating its 15th anniversary in 2026. The event offers three race distances: a challenging 50K with 5,266 feet of elevation gain, a 30K with 3,629 feet of elevation gain, and a 10K..

O'Neill Park Trail Races is a multi-distance trail running event held in O'Neill Regional Park, near Trabuco Canyon, California. The race offers 50k, Marathon, 30k, Half Marathon, and 10k courses, described as spectacularly beautiful and a gem of South Orange County. Participants can pre-pick bibs a..

Napa Wilderness Trail Runs, held at Skyline Wilderness Park (2201 Imola Ave, Napa, CA), offers a spectrum of trail races from a 10K up to a 50K. The event emphasizes accessibility for all levels, with a 50K and 30K designed with guidance from ultra runner Angela Abbey. The courses feature Rim Rock T..

The Back On The Ranch Trail Run is scheduled for October 3 and 4, 2025 in Los Olivos, CA. The event offers multiple timed and multi-hour formats for participants over two days. Distances and formats: 3 hour 6 hour 12 hour 24 hour 48 hour A runner guide for the 2025 event and an organizer liabilit..

Wild Rose Half Marathon & 5K is a brand-new spring running event in Roseville, California, starting and finishing at Moksa Barrel House. Runners can choose a flat, fast Half Marathon on the Pleasant Grove Bike Path—a forked out-and-back with under 240 feet of elevation gain—and a 5K loop through Wil..

Rim Rock 50 Mile Trail Challenge is the inaugural ultramarathon in Napa Valley, staged at Skyline Wilderness Park and weaving through the Napa Open Space Preserve and the new Suscol Headwaters Trail System. The event offers a 50-mile solo option or a two-person relay, with two roughly 26-mile loops..