Trail Running Calendar California 2026-2027

Tough Mugu The Tough Mugu is a trail running event offering two distances: a 25 km trail and a 10 km trail. It is part of the Bulldog Challenge Series of races. The event is located at La Jolla Canyon in Point Mugu State Park, Malibu, Calif..

Join a community run through the dirt trails of Griffith Park in Los Angeles. Choose between 5k, 10k, 15k, or half marathon distances and enjoy a relaxed racing environment with finisher medals and free photos.

Experience the technical trails of Mt. Tamalpais and Muir Woods on this scenic coastal run. Choose from 10K, Half Marathon, or 30K distances featuring redwood forests and Pacific Ocean views.

Join this summer running event at Whittier Narrows Recreation Area featuring 5k, 10k, 15k, and Half Marathon distances. Enjoy a scenic loop course with finisher medals and snacks included for all participants.

The Lost Sierra Endurance Race offers 25K, 50K, and 100K trail runs through the scenic and rugged northern Sierra Nevada near Downieville, California. The 100K is a demanding out-and-back route, while the 50K is a point-to-point course with..

Run under a full moon in the Anza desert. The event features four distances on a scenic 4.6-mile looped trail course. Participation is capped at 200 runners.

Run on the flat, scenic Great Shasta Rail Trail near McCloud. Choose from 50K, 30K, or 10K out-and-back distances. The event supports trail preservation and includes a shirt, meal, and finisher medal for all.

Mountain Tiger Donner Summit is a point-to-point 12.5-mile trail race on Tahoe's Donner Summit, featuring four summits and 3,300 feet of climb. It includes shuttle service from finish to start. Registration opens in late February 2026.

Tackle the trails of Auburn, CA in this second leg of a 3-part trail series. Choose from a 10.5 or 5.9 mile course through the American River Canyon, featuring challenging hills. Finish with a tech shirt, custom medal, and a celebratory bee..

The Badwater 135 is a 135-mile ultramarathon from Death Valley to the slopes of Mount Whitney. Starting at the continent's lowest point, runners face extreme elevation changes across three mountain ranges. It's an invitational race with a s..

Join the SoCal Summer evening 6K or 12K at Lower Arroyo Park in Pasadena on July 31 2026 and celebrate after with tacos and drinks. Scenic park routes and friendly vibes make this a perfect summer night run.

A mountain 5K, 10K and half marathon around Green Valley Lake, CA, featuring mixed paved and dirt surfaces, multiple aid stations, chip timing, race awards, and proceeds benefiting The Children’s Forest.

Explore the trails at the Riley Park Trail Races in Orange County's Thomas F. Riley Wilderness Park. With distances from a 5k to a 30k and a 6-hour event, there's a trail run for various goals. All finishers receive a shirt and a medal.

Experience the coastal beauty of the Marin Headlands with trail races ranging from 8K to 50K. Run past historic landmarks and enjoy panoramic views of the Golden Gate Bridge and the Pacific Ocean.

Run a unique multi-loop marathon through California's scenic Royal Gorge. Choose to tackle the 26.4-mile course solo or share the adventure with a partner or team. The event features a central, festive aid station accessible only by shuttle..

One of the oldest 50k races in the US, the Skyline 50k Endurance Run loops through the scenic East Bay Regional Parks. Runners enjoy strong community support from local running groups and a festive finish at Lake Chabot Marina.

Explore new trails above Shaver Lake at the Ely Mountain Trail Race. Choose between a 14K course with a rugged 1,000-foot climb or an 8K route, both offering mountain views. All runners get a custom shirt, finisher medal, and post-race refr..

Experience a high altitude alpine adventure in the High Sierra of Northern California. Run through scenic wilderness loops near Lake Tahoe with distances ranging from 5.6 miles to a 50K ultramarathon.

Run among redwoods on steep trails with mountain views in Gilroy. Choose from a 5K, 10K, or Half Marathon. Proceeds support scholarships for young runners.

Bear Creek is a trail running event in Lafayette's Briones Regional Park with half marathon, 10K, and 5K distances. The courses feature hills, scenic views, and a rewarding final downhill mile. All finishers receive a custom medal and shirt..