California
California Trail Running Calendar 2026-2027
Explore the best trail runs in California for 2026-2027! Our updated list features 380 exciting trail runs across the region. Find your next trail run in California below and join the trail community at these great events!
November 2026
Rancho Ramble Trail Run at Santa Margarita Ranch offers 10K, half marathon and 50K races over soft, hilly trails with changing terrain. The event is part of a Spartan OCR festival weekend and features Central Coast scenery.
Veteran-focused 5k and fun runs on 11/11/2026 in Clovis, CA, with in-person and virtual options supporting veteran organizations.
A second annual trail run along the empty Kaweah Lake Bottom in Three Rivers, California with 5K and 10K options, race amenities, and proceeds supporting St. Anthony Retreat Center.
Run through the historic streets of Avalon and the rugged interior trails of Catalina Island. Choose between a half marathon, 10K, or kids fun run featuring stunning Pacific Ocean views and island landmarks.
Fixed-time trail runs on an approximately 2.75 mile loop in O'Neill Regional Park with 3, 6 and 8 hour options through wooded canyons and varied terrain.
Experience a flat and fast trail race through the scenic Quarry Lakes Regional Recreation Area in Fremont. Choose from a USATF certified half marathon, 10K, or 5K while enjoying views along the Alameda Creek Trail.
A map-based 2- or 4-hour team scramble through Santa Cruz redwoods and meadows with timed checkpoints and on-site timing chips.
Trail event in Yucaipa with 21, 10, and 4 mile courses; 10% of registration fees support the Crafton Hills Open Space Conservancy.
Trail event in El Dorado Hills with distances from 5K to trail marathon on mostly single-track dirt, rolling hills, a creek crossing, marked aid stations, and enforced time limits; finishers receive a medal.
Backyard style running event in the San Diego area with a hard packed trail, a small hill, car camping and dog friendly policies.
Trailsgiving in Elysian Park offers 5k, 10k, 15k and a half marathon on marked out and back trail loops with on course aid and finisher medals.
Trail races on the Stanislaus River Trail in Ripon, CA offering 5K, 10K and a half marathon with shirts, medals and age-group awards on November 14, 2026.
The 30th annual Patagonia Salmon Run takes place in Ventura on November 15, 2026, as a 5K (listed at 3.14 miles). Online registration is required, the event aims for zero-waste, and a Patagonia store discount is available to bib holders.
Friendsgiving FUNdraiser run at Whittier Narrows on Nov 15, 2026 offering 5k, 10k, 15k and a half marathon with proceeds supporting API Forward Movement.
An obstacle and mud-focused 5K at Oak Canyon Park in Irvine on Nov 21, 2026, featuring mud pits, walls, ropes, a festival village, and packet pickup the day before.
Trail race at Darrington Trail Head by Folsom Lake offering 5K, 10K, 18M and 36M on rocky single-track with rolling hills, aid stations, drop bags, and a 10-hour overall time limit.
A trail race at Finegold Creek Preserve in Friant, California, featuring a 10k and a 7k on conserved foothill land. Net proceeds support Kids Kasa Foster Care and the Sierra Foothill Conservancy.
A November trail event in Griffith Park, Los Angeles offering multiple distances including 50K and marathon, organized by Keira Henninger Events.
A community endurance event in Bakersfield on 11/21/2026 where a 4.2 mile loop starts each hour. Participants can run one loop, repeat loops through the day, or attempt twelve loops for about 50 miles with aid and free parking provided.