Trail Running calendar near Fairfield 2026-2027

Rattlesnake Dick is a scenic, challenging trail race in Cool California on March 21 2026 with 50K 25K and 10K options and significant elevation gain. All entrants get a North Fork Clothing race shirt and finishers earn weighted medallions w..

A trail race at Bothe Napa Valley State Park on March 21, 2026 offering marathon, half marathon and 10K with a 300 runner limit. Courses use single track loops with one aid station and a six hour marathon cutoff.

Run peaceful redwood trails in Oakland with distances from a kids 50 yard dash to 50K ultras, plus family friendly 5K and marathon options. Enjoy scenic singletrack, stocked aid stations and springtime forest views.

A community fundraiser in downtown Placerville on March 21, 2026 offering live and virtual 5K and 10K options to support New Morning Youth & Family Services and other local nonprofits serving seriously ill children.

Join the Lag Bon 10K trail run in Fairfax on March 22 to celebrate World Water Day and support Evidence Action's Safe Water Now program. Limited to 100 runners, the technical 10K features stairs, roots and muddy singletrack and runs rain or..

Scenic half marathon in La Honda at Skyline Ridge, with runnable single track and fireroad through woods and hills offering ocean and bay views. Proceeds benefit The Hatuey Project and entry fees are matched to double the gift.

Join Western Pacific 2026 at Quarry Lakes in Fremont for scenic half marathon, 10K and 5K routes along the Western Pacific and Alameda Creek trails. Mostly flat trails welcome runners, walkers and remote runners.

A trail race in Auburn, CA on March 28, 2026 offering 5K, 10K, half and 35K routes on Western States trail terrain with notable climbs, chip timing, staffed aid stations, and a cupless policy requiring runners to carry their own cup or bott..

Trail races at Falcon Crest Parking Lot in El Dorado Hills on March 28, 2026 offering 5K, 10K, 8 Mile and Half Marathon on dirt single-track with rolling hills, marked aid stations, and a commemorative finisher medal.

Trail races in the Marin Headlands near Mill Valley offering marathon, half marathon and 10K routes on single track and fire roads with views of the Golden Gate Bridge, San Francisco Bay and the Pacific Ocean. The field is limited to 400 pa..

Trail runs on Mount Diablo on April 4, 2026 offering 50K, half marathon, 10K and 5K distances with a portion of fees supporting Save Mount Diablo. The half marathon is included in the Brazen Ultra Half Series.

Trail events on April 4, 2026 from Folsom to Auburn include a 50 mile endurance run plus 25 and 10 mile options, with on-course aid, professional timing, finish medals, goody bags, and post race food and beverages.

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.

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.

A women focused 10K in Auburn on April 11, 2026 featuring scenic trail loops, finisher shirts, age group awards and a raffle with four winners earning a trip to a women only running camp in Spain.

A multi-distance trail event in Pilot Hill, California on April 11, 2026, organized by Troy’s California Trail Runs, with courses on stony dirt paths across hilly terrain and lake views, offering distances from 5K to 50K.

Take on Calistoga's scenic mountain trails on April 12, 2026, with distances from a spirited 10k to an epic 50k. Expect rugged single track, sweeping views of Table Rock and Mount St Helena, aid stations on course, and a festive finish on t..

Run scenic singletrack by Folsom Lake at Outlands Endurance Race in Pilot Hill CA April 18 2026 with 25K, 50K and 50M out and back courses. Includes a hat, wood awards, a post race meal and Sierra Ultra Trifecta credit for 50K and 50M.

Trail races in April 2026 at Del Valle Regional Park offering Half Marathon, 10K and 5K distances with electronic chip timing. Finisher medals and t shirts are provided and walkers and hikers are welcome.