Trail Running Calendar California 2026-2027

Run scenic single track trails along Folsom Lake through oak and grass, with technical sections and shaded viewpoints. Choose from half marathon, 8 mile, 10K or 5K, grab same day registration and a commemorative medal at the finish.

Challenge yourself at the Billy Goat Mountain Climb on April 4, 2026 in Cleveland National Forest near Silverado CA. Choose the 17 Miler Silverado Loop, Half Marathon or 10K and tackle rugged trails with big climbs and creekside scenery.

Limited to 400 runners, the Golden Gate Headlands Marathon, Half Marathon and 10K invites trail lovers to Mill Valley, CA. Run single track trails and fire roads with sweeping views of the Golden Gate Bridge, San Francisco Bay and Pacific.

Take on Mount Diablo on April 4, 2026 with trail distances from 5K to 50K, including a challenging ultra half that often exceeds 13.1 miles. Organized by Brazen Racing, the event supports Save Mount Diablo and offers remote entries and post..

Run the scenic American River Parkway from Folsom to Auburn with 50, 25 or 10 mile options. Expect aid stations, a tech shirt and finisher medallion, plus a festive post race party with food and a beer garden.

Hit the trails at Crystal Cove for Rock It in El Moro Canyon on April 4, 2026, choose a scenic 6K or challenging 10 Miler with climbs, descents and Pacific Ocean views. Run or hike, and enjoy a shirt, race photos and a finisher medal.

Hoppy Easter invites runners to tackle 5k, 10k, 15k and half marathon routes through Griffith Park, Los Angeles on April 4, 2026. Enjoy scenic trails, a custom finisher medal, free photos and snacks for a festive spring run.

Run the Nature Made Great Race in Agoura Hills on April 11, 2026, with scenic trail and road options from a Chesebro half to a one mile fun run. Celebrate at the expo and post race party, earn a tech top and commemorative medal.

Join the unique Run with the Burros in Inyokern, CA, a pack burro race and trail run across scenic desert terrain. Choose from marathon, 18 mile, 10 mile or 5 mile courses while supporting local animal rescues and community causes.

Romancing the Island at Angel Island State Park offers a scenic half marathon or 10K loop with iconic Bay views. Limited to 400 runners, this intimate island race is ferry accessible and unforgettable.

Run scenic Lake Sonoma trails near Healdsburg with a 100K Western States qualifier, a 50K, and a women only Trail Sisters half. Expect rolling singletrack, lake views, on course aid and a memorable finish with a custom bottle of wine.

Enjoy scenic single track and lake views at Bedrock Valley Trail Runs, April 11 and 12 at Diamond Valley Lake Marina. Choose from marathon to stroller 5K plus gravel bike options, bring your own hydration and earn finisher swag.

Oriflamme is a 50K out and back trail race in the Julian and Anza Borrego Desert that combines sweeping desert vistas with steep canyon climbs and sandy single track. Limited to 150 runners, finishers earn a medal and technical shirt.

Challenge yourself on scenic Lake Chabot trails April 11, 2026 in Castro Valley with distances from 8K to 50K plus a free kids dash. Looped, well marked courses offer big climbs, frequent aid stations and finisher medals for all.

Run the scenic Wild Flowers 10K in Auburn on April 11, a loop of single track trails with rolling hills and two aid stations. All finishers get a race tee and top finishers can win prizes including an all expenses paid trip to Spain.

Calistoga Mountain Run offers 10k to 50k trail races around Mount St. Helena, with rugged single track, fire road climbs and stunning views. Expect technical terrain, big elevation gain and limited aid so bring water and fuel.

Hit scenic trails at Ruth McKenzie Preserve in Clovis on April 12, 2026, with a challenging half that climbs Table Mountain plus 10k, 5k and kids races. Expect rugged single track, aid stations, finishers medals and a festive post race spre..

Yaya's Run in Ventura invites runners to a scenic beach path race at Surfers Point with 5k, 10k, 15k and half marathon options. Join this memorial event for a morning of ocean views, supportive aid stations and finisher medals.

Badwater Salton Sea is an epic 81 mile team ultra from the Salton Sea to Palomar Mountain, gaining over 9,000 feet across desert roads and single track. Teams of two or three run together through extreme heat and wildly variable conditions.

Experience lakeside singletrack and sustained climbs at the Outlands Endurance Race on April 18, 2026 in Pilot Hill, CA. Choose 25K, 50K, or 50M and enjoy stocked aid stations, a custom runner hat, wood awards, and a hearty post race meal.