Trail Running Calendar California 2025-2026

Island View Endurance Run in Goleta, CA offers distances from 12 km to 100 mile across scenic coastal trails with big climbing. Supportive aid stations and buckle awards for 100 mile finishers make this a memorable ultrarunning test.

Run Krampus Cross Country in San Francisco live on Dec 7 or virtually Dec 5 to 8 with 5K 10K and the Naughty Nine Miler. All entrants get a wooden woodallion a Krampus tee and a beer sampler stein plus a brewfest on Dec 5.

The Fremont Canyon 28k Trail Run is an exciting running event taking place in Irvine Regional Park, Orange, California. Scheduled for December 6, 2025, this challenging 28k (17.5 miles) course features fire roads with an elevation gain and..

Run the 37th annual Death Valley Trail through dramatic desert scenery and near North America's lowest point. Choose marathon, half marathon, or 10K on a quiet dirt road with a limit of 200 runners for an intimate challenge.

Take on Ridgecrest high desert loops from Cerro Coso Community College on December 6, 2025 with 50K, 30K, or 10K options over rolling dirt roads. Handmade ceramic medals, aid stations and post race pizza make for a memorable day.

Run along the scenic Alameda Creek Trail at Quarry Lakes in Fremont with 5K, 10K, Half Marathon and kids distances on flat, well marked courses. Pre registered runners get shirts and all finishers earn medals; bring a water bottle.

Run scenic oak lined single track at Calero County Park with distances from a kids mile to 50K and options including marathon and multi loop courses. Well marked courses, aid stations and finisher medals make for a memorable day.

Scenic 50 mile point to point trail through Cuyamaca Rancho State Park, summiting Stonewall Peak before dropping into desert to finish at Stagecoach Trails RV Resort. Family friendly with post race camping, meal and showers.

Take on scenic Pacific trails at the Ray Miller 50/50 at Point Mugu State Park in Malibu on December 6, 2025. Multiple trail distances welcome runners, but 2025 entries are sold out and the waitlist is closed.

Peacock Gap Trail Run invites runners to China Camp State Park near Mt. Tam for 30K, half marathon and 10K distances on scenic single track and fire roads. Enjoy forested views, a challenging climb and hearty aid stations.

Run along the scenic San Joaquin River and Millerton Lake at the San Joaquin River Trail event in Friant, California, with 10k, 25k, and 50k options. All finishers get medals and swag, with awards for top finishers and age group winners.

Join the San Clemente Santa Run on December 6, 2025 for a festive 5K or fun run along the beach, starting at the Pier Bowl. Celebrate with music, an auction and dinner while supporting Lily's Lighthouse and epilepsy research.

Take on San Francisco in the legendary Hunter S. Thompson Fear & Loathing, an annual urban ultramarathon starting and finishing at Twin Peaks with 50 mile and 50K distances. Community run with free entry, a casual fat ass vibe, scenic city..

Tackle scenic single track trails at Elfin Forest in the Keepin' It Rural 5K and 10K, where runners get chip timing and a festive post race party. Enjoy a tech shirt, finisher medallion and a beer while supporting Escondido Creek Conservanc..

Run the scenic coastal trails of Crystal Cove State Park on December 13, 2025 at the Crystal Cove Trail Run with 15K and 6K courses plus a kids 1K. Celebrate at the post race party with breakfast, a 21 and over beer garden, free photos and..

Run a scenic point to point trail half marathon along Folsom Lake, winding on single track through oak groves, grassy slopes and Sierra views. Expect technical sections, gentle rolling hills and shuttle service back to the start.

Run through towering redwoods at Sanborn Regional Park with half marathon, 10K and 5K options plus a remote runner choice. Expect scenic climbs, narrow single track trails, professional chip timing and custom finisher medals.

Experience the Dixon Lake 10/10 Trail Race at Daley Ranch in Escondido on December 13, 2025 with 10 mile, 10K and 5K courses on scenic single track and dirt roads. Limited to 300 runners, the 10 mile reaches Standley Peak for panoramic view..

Experience a scenic loop around Angel Island with views of the Golden Gate and Alcatraz at the 37th Hark the Herald, offering a half marathon and a hilly 10K. Limited to 400 runners, includes ferry transport and finisher swag.

Doomsday is a trail run in Cool, California on December 13 with 50K and Half Marathon routes across rugged high elevation terrain. Limited to 200 runners, this scenic but demanding race rewards finishers with medals and shirts.