Trail Running Calendar California 2025-2026

The Crystal Springs Trail Run takes place at Huddart Park (Werder Shelter), 1100 Kings Mountain Road, Woodside, CA. The event includes the following distances: 8K Half Marathon 35K Marathon 50K Kid's Run (6yo & younger, 50 yd dash) - Free Race-day check-in begins at 7:00 a.m. at Huddart Park..

The Pacifica Foothills Trail Run is scheduled for January 24, 2026 at San Pedro Valley County Park in Pacifica, California. The event offers three distances: 30K - 18.9 miles, 4,300 ft elevation gain Half Marathon - 13.2 miles, 3,100 ft elevation gain 10K - 6.0 miles, 1,200 ft elevation gain The..

Folsom Lake Sweetwater Trail Run takes place at Folsom Lake State Recreation Area, Salmon Falls Parking Lot in El Dorado Hills, California. The event offers eight distances: Kids Run, 1 mile, 5K, 10K, 9 Mile, Half Marathon, 30K, Trail Marathon, and 50K. The course is 95% single-track with 5% dirt ro..

The La Cuesta Ranch Trail Run takes place at La Cuesta Ranch near San Luis Obispo on Loomis Road on January 24, 2026. The course uses 100% dirt trail and ranch roads and runs along West Cuesta Ridge and Poly Canyon. The start and finish area is staged at the historic ranch barn. The event offers a..

The Gumby 10K and 5K are trail running events held at Granite Beach, Folsom Lake State Recreation Area. The races feature scenic courses along the shores of Folsom Lake, with well-marked trails and enthusiastic volunteers providing support. Aid stations are strategically placed throughout the course..

The Hollywood Sign Run | Hike takes place on January 25, 2026 in Griffith Park, Los Angeles. The event includes multiple distances and race types: 8 miles Hollywood Sign Run | Hike 8 km Cathy’s Corner 8K 5 km Griffith Park 5K Trail Challenge 2.2 km P-2.2K Kid Run The start and finish are located..

Calico Trail Run is held at Historic Calico Ghost Town and the Calico Mountains, about 10 miles north of Barstow, California. The event offers 30K and 50K trail courses through a rugged Mojave Desert landscape, highlighting the dramatic scenery of Calico’s historic mining district. It’s described as..

The Hollywood Sign Run | Hike takes place on Sunday, January 25, 2026 in Griffith Park with start/finish on the fire road just north of the Old Zoo picnic area. The event is produced by OTG Events, a Glendale-based event production company founded in 2015. Distances offered include: 8M Hollywood S..

Sean O'Brien 100K/50M/50K/26.2/30K is a trail ultramarathon event in Calabasas, California (1925 Las Virgenes Road). It offers five distances: 100K, 50 miles, 50K, marathon, and 30K, giving athletes a range of challenging options on scenic trail terrain. The race is part of the Sean O’Brien Trail Ru..

Brazen Racing's Coyote Hills event takes place at Coyote Hills Regional Park in Fremont, California. The weekend offers three distances: a half marathon, 10K, and 5K, with walkers welcome and a Half Marathon Hiker Division for those taking longer than four hours. The course features a mix of paved,..

The Fort Ord Trail Run takes place at Fort Ord National Monument / Laguna Seca Recreation Area in Monterey County, California on February 7, 2026. The event offers the following distances: 10K (6.4 miles, 900 ft elevation gain) 25K (16.3 miles, 2,250 ft elevation gain) 50K (31.0 miles, 4,300 ft el..

Monterey Ultra is a 50-mile trail ultramarathon set in Fort Ord National Monument near Monterey, California. Local runners designed a varied course that combines a 35-mile loop and a 15-mile loop, with wide fire roads, twisting single-track, deep sand, and rocky, rooty climbs, totaling about 7,080 f..

The Escape from Folsom is a trail running event held at Granite Beach, Folsom Lake State Recreation Area. It offers two race distances: a 10-mile run and a 5K (3.1 miles), both featuring scenic trails adorned with wildflowers. The course includes multiple aid stations providing water, electrolyte be..

Boney Mountain Trail Run takes place in Thousand Oaks, California, starting from Rancho Sierra Vista / Satwiwa in the Santa Monica Mountains. It offers a Half Marathon (13.1 miles, ~2,780 ft gain) and a 7k Trail Run (4.4 miles, ~664 ft gain). Runners traverse backcountry canyons of Point Mugu State..

Mt. Umunhum Trail Conquest-Winter is an endurance trail running event in San Jose, California, starting at the Hacienda Entrance of Almaden Quicksilver County Park. Runners can choose 5K, 7 Mile, half marathon, 30K, trail marathon, 50K, and a Kids Run.The 30K climbs Bald Mountain, while the Trail Ma..

Elevate's 12 Hour Race takes place at the First Baptist / VCA campus in Santa Maria, California. The format centers on a closed-loop course with each 12-hour lap measuring 1 mile, while the 5k is three loops of about 1.036 miles each. The event creates a campus-friendly, community atmosphere, with o..

ABetterWorldRunning hosts the Happy Valentine’s Day Grand Prix in Griffith Park, Los Angeles. The event offers multiple distances: 5k, 10k, 15k and a half marathon. The course uses dirt trails on a shared path with pedestrians and equestrians, marked with cones and signs, and runners are asked to ke..

The Bay Breeze race takes place on February 14, 2026, at San Leandro Marina Park, 14001 Monarch Bay Dr, San Leandro, CA 94577. The event offers the following distances: Half marathon 10K 5K A remote-run option is listed for the event. All race distances start and finish at San Leandro Marina Par..

The Ranch 50k, organized by Second Wind Trail Running, takes place in Daley Ranch, Escondido, California, with the start/finish at Dixon Lake Picnic Area. The 50K is two laps of a 15.6-mile loop, totaling about 6,318 feet of ascent. A half-marathon option uses a single 13.1-mile loop with ~2,706 fee..

Redtail Ridge at Lake Chabot Regional Park in Castro Valley, CA offers multiple distances: 5K, 10K, Half Marathon, 30K, and 50K. The course unfolds on a mix of moderately technical dirt trails and non-technical fire roads, with some paved sections, and features rolling hills that reward pacing and t..