Trail Running Calendar California 2026-2027

Run the forested trails of Napa Valley's Pacific Union College. Choose from 26K, 10K, or a kids' mile, with proceeds supporting college athletics. Remember to bring your own water bottle for this cupless event.

An annual 10K trail event in Glendale with a climb to 2,536 feet and panoramic views of the L.A. Basin and San Gabriel Mountains. Produced by the City of Glendale and benefiting the Glendale Parks and Open Space Foundation.

Experience the 36th annual trail run through Muir Woods and the legendary Dipsea trail. Choose between a marathon, half marathon, or 7 mile route starting from the scenic Stinson Beach.

Run or walk through conifer forests and along coastal bluffs in Point Arena. This sustainable 5K trail event supports local environmental education and youth stewardship on the Mendocino Coast.

Experience the scenery of Tilden Regional Park at the Grizzly Peak Trail Run. Choose from various distances including a 50K and marathon starting from the shores of Lake Anza in Berkeley.

The 30th annual Paiute Meadows Trail Run explores the scenic single-track trails of Susanville Ranch Park. Runners can choose from distances including a 50K, 30K, half marathon, and a free kids' race. It's a cupless event with well-stocked..

Experience the diverse landscapes of Monterey County with courses ranging from a family friendly 1 mile run to a 35K trail race through the Palo Corona Backcountry. Enjoy exclusive access to protected lands and coastal vistas.

Chase the legend through the scenic Dry Creek Preserve. This unique 5k trail run features river crossings and a playful Sasquatch theme. Part of the proceeds support the local nature preserve.

Test your endurance at Almaden Quicksilver County Park with 50 km or 100 km trail races. These USATF sanctioned events offer significant elevation gain and the 100 km distance serves as a Western States 100 qualifier.

This inaugural half marathon offers a scenic tour of Napa Valley, running on closed vineyard roads from Quintessa Winery to Yountville. The race includes shuttle transport, a custom medal, and concludes with a Wine Village celebration featu..

Kick off the trail running season with the Dirty Secret Trail Run in Cool, California. Choose from a 10.3 or 5.8 mile course featuring single-track trails, meadows, and a creek crossing. Finish with a strawberry pancake breakfast and a cust..

Experience the scenic trails of Crystal Cove State Park in this coastal run featuring 50K, 25K, and 5K distances to support the John Wayne Cancer Foundation.

Celebrate the 24th year of this community event in Los Altos Hills. Run or walk through the Westwind Community Barn and Byrne Preserve on hilly 5K, 10K, or 1 mile courses.

This trail run takes place at the scenic Sly Park Recreation Area near Jenkinson Lake. Runners can choose from seven different distances, from a 5K to a 50K. The course is marked with ribbons and signs, and all finishers get a medal.

Experience the lush redwood landscapes of Saratoga at Trailquake 2026. Choose between 5K, 10K, or half marathon distances on forested trails with options to run, walk, or join remotely.

Celebrate Mother's Day on May 10th with a family-friendly run or walk. The event, held at Pinto Lake County Park, features a 1K kids run, 5K, and 10K. Your participation benefits Pajaro Valley Shelter Services.

Experience high altitude obstacle racing at Big Bear Mountain Resort featuring steep climbs and over 1200 feet of descent. Conquer the Sprint, Super, or Beast distances to earn your Trifecta qualification in the San Bernardino National Fore..

Trail runs at Skyline Wilderness Park in Napa with 50K, 30K, 21K and 10K options. Routes include steep Rim Rock climbs, summit views, cupless aid stations, and on-course water-only sections for longer distances.

Run for Amma is a 15th-anniversary charity trail run supporting cancer research at UCSF. The event features 50K, 30K, and 10K distances through Skyline Ridge Open Space Preserve. All registration proceeds go directly to fund cutting-edge ca..

The inaugural Rim Rock 50 Mile Trail Challenge explores Napa's wild trails. Runners will tackle a two-loop course through Skyline Park and the new Suscol Headwaters. This cupless event offers a 50-mile solo or relay option with a 13-hour cu..