Trail Running Calendar California 2026-2027

A 200.2 mile ultramarathon around Lake Tahoe using the Tahoe Rim Trail and National Forest lands, featuring many single-track sections, multiple aid and sleep stations, and a 105 hour cutoff. The course is currently an out and back route.

A multi day trail running weekend in Big Bear Lake from June 12 to 14, 2026 featuring a TransRockies style three day stage race and single day events from a Vertical Stage to 33 miles with notable elevation gain.

A point-to-point 100-mile ultramarathon from UC Berkeley to Skyline High School in Oakland, featuring about 18,000 ft of elevation across ridgelines, redwood forest and lake trails; the 2026 race is sold out with a waitlist.

A multi-distance trail event in Cool, California on June 13 and 14, 2026 featuring 13.5 and 11.5 mile loops, live runner tracking, single track and fire road terrain, and finisher awards for every distance.

A 100-mile trail event on two alternating loops in Cool, California, totaling about 13,600 feet of elevation gain. The race features marked single track and fire roads, aid stations, chip timing with live tracking, and handcrafted finisher..

A half marathon, 8 miler, and 5K held at The Village at Palisades Tahoe with courses on the paved Truckee River Trail, aid stations and on-site medical support, and event amenities including a T-shirt, medal, and post-race beer for 21 plus.

A four race series of open 5 km races at Panorama Vista Preserve in Bakersfield, with Youth, High School and Adult divisions, two waves, a 45 minute time limit, and series scoring that counts each runner's best three races.

Experience a fixed-time event at Crissy Field with stunning views of the Golden Gate Bridge. Run or walk as many laps as you choose in three six or twelve hour blocks as an individual or part of a team.

A new trail race at Lagoon Valley Park in Vacaville offering 30K, 10K, 5K and a kids 1K fun run. Routes traverse single track, fire roads, oak groves and a lagoon, with marked courses, aid stations and long sleeve tech shirts.

Annual 5K and 10K fun run and walk each June at Hunting Hollow in Henry W. Coe State Park. The relatively flat dirt course runs through a wildflower-lined valley with oak trees and occasional wildlife, with proceeds supporting park projects..

Phoenix Rising is a multi distance trail race in Griffith Park Los Angeles offering 5k, 10k, 15k and a half marathon on marked out and back and loop courses. The event includes aid stations, finisher medals and free photos.

A 5K fun run and walk at Cosumnes River Preserve in Galt, California on June 13, 2026. The in person event follows trails within the preserve, is organized by Cosumnes River Preserve, and has free admission.

Tails & Trails Charitable Walk/Run in Santa Rosa supports Dogwood Animal Rescue with in person and virtual options, flat scenic trails, a community finish area, and a limited edition 2026 dog bandana for participants.

A second annual running event at the Old Los Angeles Zoo area on June 14, 2026, offering a half marathon and a 12K on relatively flat, scenic trails. Registration runs November 21, 2025 to January 26, 2026 with fees from $49.

Los Mugrosos 5K in South El Monte on June 14, 2026 features a scenic single loop trail and a kids dash for ages 2 to 12. The main 5K includes a shirt and finisher medal and is limited to 90 runners.

A 100 mile loop through Lassen National Forest and the Thousand Lakes Wilderness that starts and finishes at Burney Mountain Guest Ranch. About 14,000 feet of ascent across singletrack, rail trail and forest road, with on site camping and l..

A four day mountain running event at Palisades Tahoe near Lake Tahoe, California. Races range from a kids run to a 46K and include steep off trail sections, ladders, hand lines and a Via Ferrata.

Orange Curtain Run in Orange County, California offers a range of distance and timed events from 10K to 100K on mixed pavement and bike path surfaces. The event is scheduled for June 19 and 20, 2026 and includes a certified marathon.

A trail race at Black Mountain in San Diego with 50K, 25K and a half marathon on June 20, 2026. The event follows Trail Sisters guidelines and features aid stations staffed by ham radio experts.

A cupless trail race in the Susan River Canyon featuring a loop from Hobo Camp that uses the Bizz Johnson Trail outbound and flowy South Side singletrack on the return. Three distances are offered and all finishers receive a towel and medal..