Trail Running Calendar California 2025-2026

The Sasquatch Trail Run is a family-friendly event taking place in Woodlake, California, on May 10, 2025. Participants can choose from various events, including a 5k Fun Run, a 5k Virtual Race, and a Kids Race. The scenic course runs through the Dry Creek Preserve, featuring moderate challenges such..

The John Wayne Grit Series - Newport Coast is a running event that features 50K, 25K, and 5K races set against the stunning backdrop of Crystal Cove State Park in Laguna Beach, California. Participants will navigate hill climbs and enjoy ocean views along dirt roads and single-track trails. The even..

The Waves & Whales 5K Trail Run is an annual event held in Point Arena, California, showcasing the stunning Mendocino Coast. Participants run through the scenic Point Arena-Stornetta Unit of the California Coastal National Monument, starting in a conifer forest and winding along coastal bluffs. Proc..

The Quicksilver Endurance Runs is an annual trail running event held in San Jose, California, featuring 50K and 100K races on scenic, challenging single-track trails and fire roads through oak forests, meadows, and ridges with panoramic views of the Santa Clara Valley and Santa Cruz Mountains. The 1..

The Pacific Crest Trail 50 (PCT 50) is a challenging 50-mile trail run set in the scenic Cleveland National Forest, California. Scheduled for May 10, 2025, this event is part of the SoCal Ultra Grand Prix Series. The course features an out-and-back route primarily on single-track trails, with signif..

The Trail Run at Sly Park - Spring is an exciting running event taking place at the Sly Park Recreation Area in Pollock Pines, California. Participants can choose from various distances, including a 50K, Trail Marathon, 17 Miler, Half Marathon, 8 Miler, 10K, and 5K, all set against the stunning back..

The Billy Goat Half Marathon Climb is a challenging mountain race held in Temescal Valley, California, within the Cleveland National Forest. Scheduled for May 10, 2025, the event features a scenic course along Maple Springs Road to N. Main Divide, offering stunning views and a significant elevation..

The Muir Woods Marathon, Half Marathon, and 7 Mile trail runs take place annually at Stinson Beach, California, starting from the Stinson Beach Parking Lot. This scenic event features challenging courses that ascend from sea level into the dense, towering redwoods and oaks of Muir Woods, following t..

The Boney Mountain Trail Run is an exciting running event set in the stunning Santa Monica Mountains, starting at Rancho Sierra Vista | Satwiwa National Park. Participants can choose between a challenging half-marathon course featuring creek crossings, single-track climbs, and breathtaking ocean vie..

The Paiute Meadows Trail Run is an annual event held in Susanville, California, showcasing the region's premier trail system. Participants can choose from multiple race distances, including a 50K, 30K, half-marathon, and a 4.5-mile course, all featuring challenging climbs, water crossings, and sceni..

The Dirty Secret Trail Run, held in Cool, California, offers two scenic trail race options: a 10.3-mile long course and a 5.8-mile short course. Starting at Northside Elementary School, the course features challenging terrain with rolling hills, stream crossings, and single-track trails. Notable hig..

The Race for Open Space is a trail running event organized by the Big Sur Land Trust, taking place in Monterey County. Scheduled for May 10, 2025, this event features multiple courses, including a 1-mile Fun Run, a 5K, a 12K, a 25K, and a challenging 35K+ route. Participants will traverse the scenic..

The Grizzly Peak Trail Run is an exciting running event taking place at Lake Anza in Tilden Regional Park, Berkeley, CA. Scheduled for May 10, 2025, it features multiple race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under...

Nitro Trail 2025 is a trail running event held at Point Pinole Regional Shoreline Park in San Pablo, California. The race offers three distance options: a half marathon, 10K, and 5K, catering to a range of runners from casual to more competitive trail enthusiasts. The course is set in a historic are..

Dirt Circus - San Luis Obispo is a vibrant community running event set to take place in San Luis Obispo, California. Organized by UltraSignup, this festival celebrates local races and the running community, featuring a social run, food, and a raffle with exciting prizes. Participants can enjoy a cas..

The Born to Run Ultra Marathon Extravaganza is a unique trail running event taking place from May 14 to 18, 2025, at a private ranch in Santa Barbara, California. This multi-day event offers various race options, including 4-day, 3-day, and 100-mile challenges, along with shorter distances of 30, 20..

The 13 Mile Trail Race Top Down is a scenic trail running event held in San Jose, California, featuring a half marathon course through Almaden Quicksilver Park and Sierra Azul Open Space Preserve. Participants are transported from Almaden Quicksilver Park to the starting point at Mt. Umunhum, where..

The Corral Canyon Trail Scramble is a trail running event held in the Cleveland National Forest near Campo, California. Taking place on May 17, 2025, it offers multiple race distances, including 5 miles, 9 miles, 14 miles, and a 50K ultramarathon. The courses feature rocky terrain, sandy sections, a..

The Napa Wilderness Trail Runs, hosted by Bay Trailrunners at Skyline Wilderness Park in Napa, California, offer a variety of trail running events suitable for all levels. Distances include a challenging 40-mile "Elevation Beast," a 50K endurance race, a scenic 30K, a half marathon, and a 10K for be..

The Pacifica Foothills Trail Run, held at San Pedro Valley County Park in Pacifica, California, offers trail running distances of 10K, Half Marathon, and 30K. Set within 1,150 acres of coastal mountain terrain in the Santa Cruz Mountains' northern spur, the courses feature moderately technical dirt..