Trail Running calendar near Santa Rosa 2026-2027

Run through redwood forests at Huddart Park with distances from a short 8K to a challenging 50K, plus a free kids dash. Expect scenic single track routes, friendly aid stations and a welcoming trail community.

Tackle scenic single track at Huddart Park in Woodside on Jan 18 for the Crystal Springs Trail Run, with distances from 8K to 50K plus a kids dash. Expect big climbs, stocked aid stations, cupless rules, and custom finisher medals.

Take on twisty dirt trails and big climbs around Montara Mountain at San Pedro Valley Park. Choose 10K, half marathon or 30K with aid stations, cupless racing and finisher medals for all.

A two day trail event in San Francisco that crosses the Golden Gate Bridge and runs the Marin Headlands. Multiple distances from 15K to 50 mile are offered and the event serves as the final stop of the Spartan Trail World Championship.

Runs at Coyote Hills Regional Park in Fremont, California on January 31, 2026. Courses include a half marathon, 10K and 5K over dirt, pavement and marsh boardwalks with bay views.

Run the 48th Jed Smith Ultra Classic in Sacramento Jan 31, 2026 and tackle courses from half marathon to 50 miles on scenic American River Parkway loops. Finishers receive a long sleeve technical shirt and a hand crafted wooden medal.

Run the stunning coastal trails around Rodeo Beach at the Golden Gate Trail Run, with distances from 8K to 50K to suit all levels. Expect rugged singletrack, stocked aid stations, generous finisher medals, and unforgettable views.

A bayside Valentine's Day run at San Leandro Marina Park offering a half marathon, 10K and 5K on a mostly flat course close to the water. Walkers and remote runners are welcome.

Run scenic trails around Lake Chabot in Castro Valley with distances from 5K to a challenging 50K across technical singletrack, fire roads and long climbs. Chip timed, cupless event with a 500 runner limit.

Experience coastal mountain single track and sweeping Pacific views at the Montara Mountain Trail Run in Pacifica. Choose distances from a 10K up to 50K or marathon for challenging climbs and a family friendly kids dash.

Join the Wild Goose Chase at Lime Ridge in Walnut Creek for a map based trail adventure through oaks, quarries, and rock labyrinths. Choose 5K or 10K and navigate an unmarked course to find checkpoints, then enjoy post race treats.

Tackle scenic, hilly trails on Angel Island in Tiburon with 5, 10, and 15 mile courses plus a free 50 yard kids run for ages 6 and under. Expect single track climbs, stunning views, ferry access, medals and stocked aid stations.

Run through iconic Marin Headlands, Mt Tamalpais and Muir Woods in this scenic trail ultramarathon with 50 Mile and 50K options showcasing coastal views and big climbs. Expect technical single track, steep climbs and unforgettable scenery.

Challenge yourself on the scenic, technical trails of China Camp State Park with 5K, 10K and Half Marathon options March 13 to 16, 2026. Live and virtual entries available with registration price rising after Dec 31, 2025.

Big Alta is a three day trail running festival in Marin County with summit routes and stunning San Francisco Bay views. Choose from 28K, 50K or a point to point 100K, all with live timing and stocked aid stations.

Run scenic single track trails, hills and streams at Bothe Napa Valley State Park in the intimate 300 runner Napa Valley Trail. Choose marathon, half marathon or 10K and get a race shirt plus finisher medals for full and half.

Run peaceful redwood trails in Oakland with distances from a kids 50 yard dash to 50K ultras, plus family friendly 5K and marathon options. Enjoy scenic singletrack, stocked aid stations and springtime forest views.

Join the Lag Bon 10K trail run in Fairfax on March 22 to celebrate World Water Day and support Evidence Action's Safe Water Now program. Limited to 100 runners, the technical 10K features stairs, roots and muddy singletrack and runs rain or..

Join Western Pacific 2026 at Quarry Lakes in Fremont for scenic half marathon, 10K and 5K routes along the Western Pacific and Alameda Creek trails. Mostly flat trails welcome runners, walkers and remote runners.

Limited to 400 runners, the Golden Gate Headlands Marathon, Half Marathon and 10K invites trail lovers to Mill Valley, CA. Run single track trails and fire roads with sweeping views of the Golden Gate Bridge, San Francisco Bay and Pacific.