California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 370 exciting trail runs across the region. Find your next trail run in California below and join the trail community at these great events!
June 2027
A historic annual trail race from Mill Valley to Stinson Beach covering 7.4 mile with a unique handicapping system and a field limited to about 1,500 runners.
Third annual Old Zoo Half Marathon in Griffith Park with a scenic, relatively flat course, Half Marathon and 12K distances, and a Tiger finisher medal.
A 100 mile loop in Cassel, CA through Lassen National Forest and Thousand Lakes Wilderness with about 15,000 ft of climbing and variable high‑elevation routes based on snow.
Trail races at Topanga State Park with 10 km, returning 15 km Garapito route, a junior 1 km, cash prizes, medals, postrace food and shuttles.
Trail races of 52k, 34k and 10k near Mount Shasta on single track trails and lake shore paths with fully stocked aid stations and a cupless policy.
A 200.4-mile loop around Lake Tahoe on mostly single-track trails, featuring ridge lines, alpine lakes, 12 full aid stations, and a 105-hour cutoff.
Robie Point hosts a one-mile relay with Solo, Duo, and four-person teams plus a multiweek 100 mile challenge, awards, tracking, and trail-side vendors.
A 100.2 mile trail race from Olympic Valley to Auburn with large elevation change and a lottery-based entry system.
Trail races of 6K, 12K, and Half Marathon on single track through pine forests and Sierra meadows at Burton Creek State Park near Tahoe City, CA.
Big Chief 50K is a loop trail race in North Lake Tahoe featuring single track and fire road trails, high elevation gain, aid stations, and on course medical support.
July 2027
Trail run on July 2, 2027, using part of the Great Shasta Rail Trail with 5K, 10K and a burro race near Burney, CA.
Multi-distance trail ultrarun at Calero County Park featuring a 16 mile loop, aid stations, drop bag and pacer options, with hilly single-track and wildlife hazards.
A 5K and 10K trail run from North Tahoe Regional Park through pine forests to Tahoe Vista beach, featuring a costume contest, event shirt, photos, and post-race festivities.
An extreme ironing half marathon in Auburn, CA where participants run part of the Western States Trail and iron shirts at several landmark locations for verification.
Trail races in Santa Cruz through ancient coastal redwoods, meadows and ridges, with distances from a kids 0.25 mile run up to 50K.
Community 10K and 5K in Los Gatos with mountain trails, informational booths and CPR training focused on addiction and fentanyl awareness.
A July full moon night trail event in the desert with looped courses from 9 miles to 50K, aid stations each loop, and a required headlamp.
Coastal runs from Morro Rock to Cayucos Pier on July 17, 2027 with in person and virtual options including a half marathon and a 6 mile beach run.
Timed 5K, 10K, 15K and half marathon at Griffith Park with chip timing, aid station, finisher medals, live results, and free parking.
Trail races of 25k, 10k and 5 mile at Point Mugu State Park on July 18, 2026 with aid stations, medals and a post-race festival.