Trail Running Calendar California 2026-2027

Experience a mountain run at 4,720 feet elevation through the pine forests surrounding Lake Gregory. This longstanding community event offers 5K and 10K courses on semi paved paths for runners and walkers of all levels.

Time based trail running at Skyline Wilderness Park in Napa where participants run as far as they can in 3 hour, 6 hour, or 12 hour formats on a 4.16 mile loop.

High Sierra trail event near Kit Carson, CA offering a 50K plus shorter looped races, 7,700 ft of climbing, marked courses and aid stations.

A trail running event on Aug. 8, 2026 in Gilroy, California through redwood groves and peak viewpoints. Distances include a 5K, 10K and half marathon with significant elevation gain, and proceeds support youth scholarships.

Bear Creek on August 8, 2026 offers 5K, 10K and a 13.32-mile half marathon in the Briones Regional Park area, with a virtual Remote Runner option. Entry windows and fees are listed for each race.

Operation YOSEMITE 2026 is an in-person trail event in Mono County, California on August 8, 2026, offering four distances from 6 to 22 miles with a 20 lb dry load and specified elevation gains.

A free, social trail group run in Newport Coast featuring about 6.5 miles and roughly 1,000 feet of climbing on hilly, rocky trails.

SAR Wild Run is a mountain trail event near Shaver Lake supporting the Fresno County Sheriff’s Search & Rescue Team. Races and a family hike range from 5K to a trail half marathon, and a virtual option includes mailed finisher items.

50th annual Pinecrest Run in Pinecrest, CA: five-mile and one-mile courses along Pinecrest Lake, held as a fundraiser for Pinecrest Expedition Academy.

A trail running event at Malibu Creek State Park on August 15, 2026 offering 50k and 25k courses, stocked aid stations, prize purse and festival amenities.

A 50K trail ultramarathon near San Francisco with about 6,600 feet of climbing across Coastal, Miwok, Matt Davis and Dipsea trails and a $10,000 prize purse.

## Conquer the Wall is an annual uphill running event at Snow Summit near Big Bear Lake. The one mile course rises about 1000 feet from a 7000 foot start and supports Big Bear High School cross country.

Experience the trails of Redwood Regional Park in Oakland. Runners can choose from distances ranging from a 50 yard kids dash to a 50K ultramarathon through scenic ridge lines and redwood groves.

Trail races on hilly mixed dirt and single track at Almaden Quicksilver Park with distances from 5K to 50K, aid stations, drop bag service for longer races, and mandatory course markings and cutoffs.

Two days of mud and obstacles in Moorpark on a 5K course with 15 major obstacles, rinse stations, and a Basecamp area with food trucks, vendors and music.

A 5K trail race along the Lands End Trail in San Francisco with coastal views, finisher ribbons for all and awards for the top five overall runners.

A trail and road race through Henry Cowell Redwoods with a 10K and a 1-mile kids race starting and finishing at Roaring Camp Railroads in Felton.

Trail races of 10K, half marathon and 30K in Henry Cowell Redwoods State Park featuring redwood single-track, a sandy ridge, river crossings, and cupless aid stations.

A map based 5K and 10K navigation event in Fillmore and Japantown, San Francisco, with team options, checkpoint questions, and post event refreshments.

A 13.7 mile out and back on the Dipsea Trail from Stinson Beach to Mill Valley and back run with a handicapped start and annually adjusted waves.