Trail Running Calendar California 2025-2026

Lake Sonoma race weekend in Geyserville on April 11, 2026 hosts a Western States qualifying 100K, a rolling 50K, and the Trail Sisters half for women. Expect scenic lake overlooks, lively aid stations, and campground vibes.

Oriflamme 50K on April 11, 2026 challenges runners with a scenic out and back from Sunrise Trailhead, dropping into Anza Borrego desert and climbing back on rugged single track. Field capped at 150 with a tech shirt and finisher medal.

Hit scenic trails at McKenzie Table Mountain Preserve with a half marathon, 10k, 5k and kids runs, featuring dirt road climbs, rolling single track and big views. All finishers earn medals and enjoy post race refreshments and a lively commu..

Napa Valley Endurance Run in Calistoga on April 12 offers 50K, 35K, half marathon and 10K across scenic single track and fire roads. Expect big climbs, vineyard views, UTMB Index status and a custom finisher medal.

Join the Run4Kids Ultra Running Party in Corona, CA on April 17 and 18, 2026 for a weekend of road and ultramarathon racing. Choose distances from half marathon to 100 mile or try timed events while supporting youth runners.

Join Porterville Military Academy for the 3rd Annual 5K/10K Trail Run on April 18 along scenic dirt paths with a kids 1/4 mile and virtual options. Enjoy a race shirt, finisher medal and chip timing while supporting the local EAA chapter.

Enjoy springtime trails at Del Valle Regional Park with the Badger Cove Half Marathon, 10K, 5K or remote option on April 18, 2026. Scenic lake routes, chip timing, finisher medal and tee make it a great day for runners and walkers.

Join teams of two or three for the epic Badwater Salton Sea, an 81 mile team ultramarathon from below sea level to 5500 ft. Expect desert heat, cold nights, a rugged trail section and strict safety rules that reward teamwork and grit.

Run a stunning 50K along the Mendocino coast, from Big River State Park to bluffs above Mendocino Village. Expect rivers, redwood forest, waterfalls and sweeping Pacific views on a scenic trail challenge.

Test yourself on the scenic Leona Divide trails in Lake Hughes on April 18, 2026 with distances from 30k to 100 miles. The 100 and 100k are Western States qualifiers and the 50 mile offers an AC100 Silver ticket; register by April 1.

Challenge yourself on rugged trails at The Oaks on the Soboba Reservation with marathon, half, 5K and kids 3K options. Expect hills, stream crossings and great community energy as part of a race supporting Noli Indian School scholarships.

Run rugged trails, mud and hills through Ramona Wine Country with competitive and fun 5K options plus a lively Beer Mile. Finishers get wine tasting, a medal and an after party at Ramona Ranch Winery while proceeds support Operation Rebound..

Outlands Endurance Race at Peninsula Campground in Pilot Hill offers lakeside singletrack and double wide trails around Folsom Lake on 25K, 50K and 50M out and back courses. Full aid, finisher swag, wood awards and a post race meal.

Run scenic trails around Annadel State Park in a community fundraiser with a half marathon, 10K and 5K. Celebrate Earth Day with cup free aid stations and help support Trione Annadel State Park and Sonoma County Parks Foundation.

Run the scenic Horseshoe Lake Trail Run at Skyline Ridge in La Honda on April 18, 2026, with distances from 5 mile to 50K and a free kids dash. Expect rolling ridge single track, aid stations, and a friendly festival atmosphere.

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.

Run as far as you can in the redwood grove at Carbon Canyon Regional Park in Brea, choosing a 3, 6, or 12 hour timed division. Looping trail laps, stocked aid and finisher shirt and medal make this a scenic endurance challenge.

Run the scenic 38th Mt Tam Wild Boar at Mt Tamalpais State Park on April 25 2026, choose the half marathon or 10K, and enjoy coastal ridge views and single track trails. Field limited to 300 so register early.

Join the 14th annual Aut2Run for Autism in Camarillo with in person and virtual options to benefit Autism Society Ventura County. Choose 1 mile to 15K, plus a kid friendly FunK, earn a finisher medal, and support local programs.

Join Coyote Two Moon, May 1 to 3, 2026 in Ojai, California, for scenic trail ultras in Los Padres National Forest with distances from 10K to 100 Miler. Expect big climbing, rugged singletrack, and a small field for a true mountain test.