Trail Running Calendar California 2025-2026

Enjoy a laid back trail weekend at Baum Lake with a scenic 4.6 mile loop perfect for runners, walkers, ultrarunners and burro racers. Choose timed 24 or 48 hour challenges or hop in for a single loop amid vibrant fall scenery.

Twilight's Last Gleaming Cross Country Challenge is a rare evening cross-country race held in Ventura, California. Now in its 40th year, it takes place on the last Saturday in October, except Halloween when it will be a week earlier. The co..

Wise Villa Fall Harvest Run is a 5k chip-timed race/walk staged at Wise Villa Winery in Lincoln, California. The two-loop course starts and finishes at the winery, winding through the property with spectacular views; the route is described..

Event details The 2025 Napa Fall Wine Country race is the 33rd annual trail event at Bothe-Napa Valley State Park in Saint Helena, California. It is scheduled for October 25, 2025 and is limited to 300 participants. Distances offered: Mara..

Event overview The Range of Light Trail Races are held at Millpond County Recreation Area near Bishop, California. The event offers four distances: 50k 33k 10k 5k The event benefits Inyo County Search and Rescue. Same-day registration at..

No Name Trail Races at Chesebro Canyon deliver scenic singletrack, runnable climbs and technical drops across 50k, half marathon and 5k options. Expect aid stations, a finisher medal, post race meal and a beer garden for 21 plus.

Join the Quicksilver Trail Challenge at Almaden Quicksilver County Park in San Jose on Oct 25, 2025. Pick a scenic half marathon, 10K, or free kids one mile and explore single track trails with sweeping Mt Umunhum views.

The Santa Cruz Island Eco-Extreme Trail Half Marathon is a challenging 13.3-mile trail race held on Santa Cruz Island in Channel Islands National Park, California. Organized by the Ventura County Sheriff's Search and Rescue Upper Ojai Team,..

Remote, rugged and self supported, The Rubicon is a challenging on and off trail group run in the northwestern Sierra Nevada near Oxbow Reservoir. Choose progressive routes into long distances with huge climbing and river crossings and expe..

Event overview OC Trail Runners Group Run takes place on Saturday, October 25, 2025 in Newport Coast, California. The run is free, social and non-competitive, described as slower-paced and take-it-easy. The stated goal is to spend time outd..

Event overview The Haunted Hills 5K & 10K is a Halloween-themed walking and running event in Redwood City, CA, on October 25, 2025. It is organized as a trick-or-treat style course for adults and families. Participants form teams of 1 t..

The 27th Annual Matt Yeo Memorial Aggie XC Open, presented by the HOKA Aggies, is held at Radke Martinez Regional Shoreline in Martinez, California. The meet features three 4.1-mile cross-country races for Women, Masters Men, and Open Men,..

Tackle the Oakland Hills Trail Run at Redwood Regional Park with scenic, technical singletrack and fire road courses offering 35K, half marathon and 10K options. Well marked routes, full aid stations, cupless rules and chip timing create a..

Explore scenic single track around Jenkinson Lake at the Trail Run at Sly Park in Pollock Pines, CA on October 25, 2025. Distances from 5K to 50K offered on shaded pine trails with aid stations and medals for all finishers.

Caspers Trail Races in San Juan Capistrano on Oct 25, 2025 offers scenic trail courses with options for every level. The race is sold out but a waitlist is open; expect marked routes, course support and event swag for finishers.

Monster Dash : Irvine, October 26, 2025 The event takes place at Bill Barber Memorial Park in Irvine on Sunday, October 26, 2025. Distances offered: 5k 10k 15k Half marathon Course, rules and logistics The course is an open route on a sha..

Machete Muertos 200 Dia De Los Muertos Ultra hits Lake Perris Oct 29 to Nov 2 2025 with distances from 10 miles to 200 miles. Expect rugged scenic loops, a festive Day of the Dead vibe, camping and on course aid.

Run a scenic 13.1 mile out and back through Pine Creek Wilderness near Alpine, California along a wide dirt fire road that climbs to a turnaround and returns mostly downhill. Expect good footing, forest views, and a US Forest Service permit..

The Roosters Backyard Ultra will take place in San Diego on Saturday 1 November 2025.

Santa Clarita Trail Race is a golden-trail running event held in East Walker Ranch on Placerita Canyon Road, Santa Clarita, CA. Brought to you by New Global Adventures, it offers four distances: 5K, 10K, Half Marathon, and 28K. The race win..