Trail Running Calendar California 2025-2026

Badwater 135 is the legendary 135 mile ultramarathon from Death Valley to Whitney Portal, testing runners with extreme desert heat and massive climbs. Invitation only field and required crew support make it one of the most brutal road races..

Run scenic 5K, 10K or half marathon around Green Valley Lake with lake loops, forest trails and a steady climb to a sweeping viewpoint. Celebrate after with food, live music and community energy while supporting the Children's Forest.

Tackle scenic East Bay trails in the historic Skyline 50K or choose a half marathon around Lake Chabot Marina in Castro Valley. Finish with a plant based BBQ and beer while families enjoy the festive atmosphere.

Challenge yourself on the Ely Mountain Trail Race at Balsam Forebay near Shaver Lake, CA, with 14K and 8K courses featuring steep climbs and sweeping Sierra views. Capped at 250 runners, both routes offer rugged singletrack and a festive fi..

Join the SAR Wild Run at scenic Shaver Lake for trail distances from a 2 mile hike to a half marathon, all supporting Fresno County Search and Rescue. Expect rugged singletrack, great views, chip timing, finisher medals and a post race BBQ..

The Bulldog Ultra The Bulldog Ultra is a trail running event held in the Santa Monica Mountains at Malibu Creek State Park on August 15, 2026. Distances offered include: 25k Trail Run 50k Ultra 75k (listed in the event schedule) The cours..

Experience rugged singletrack and sweeping ridge views at the Noble Canyon Trail races in Pine Valley CA on September 5, 2026. Choose a challenging 50K or a scenic 15K through pine forests, granite slopes and canyon switchbacks.

Tackle rugged single track trails and steep climbs at Mammoth Bar in Auburn, California, with sweeping views of the American River Canyon. Choose a half marathon or 10K and test your trail legs at this scenic, challenging outing.

Mendocino Running Festival invites you to tackle a scenic 6 mile loop with race options from 10K and half marathon to 6 hour and 12 hour timed events. Camp on site and enjoy yoga, live music and communal meals for a true festival weekend.

Scenic 7 mile 11 km Emerald Bay Trail, a point to point single track from Eagle Point to Lester Beach with moderate climbs and granite steps. Take in lake views, then hop the shuttle back and enjoy post race snacks.

Run scenic shoreline and single track trails at Granite Beach for the Gold Rush Growler, with new 2026 courses and options of 10 miles or a 5K. Every finisher gets a beer glass and a cold local IPA for ages 21 and over.

Mammoth Trailfest, Sept 25 to 27, 2026 in Mammoth Lakes, pairs trail races from Kid's 1K to a rugged 50K and Dragon's Back Ascent with live music, films, talks and local food. Enjoy lodging discounts and festival vibes.

Run the Ascot Hills Challenge 5K on scenic trails above East Los Angeles with sweeping views of Dodger Stadium and the Hollywood sign. Proceeds benefit Wilson High School fire and police cadet programs and help preserve Ascot Hills Park.

Experience classic East Bay singletrack at Dick Collins Firetrails in Castro Valley, with 100k, 50 mile, marathon and 30k options across scenic ridges and regional parkland. Friendly aid stations, stunning views and a lively finish atmosphe..

Back On The Ranch Trail Run in Los Olivos offers 3.4 mile loops with timed options from 3 to 48 hours plus a non runner choice. Enjoy camping, an aid station, souvenir gear, and a western buckle for 100 mile finishers.

Run the legendary Angeles Crest 100 mile on October 3, 2026, a point to point mountain ultramarathon from Wrightwood to Loma Alta Park. Roughly 21,610 feet of climbing and its original US 100 pedigree make it a Western States qualifier.

Tackle rugged singletrack and rocky climbs near Emigrant Gap at the Signal Peak Trail Runs on October 3, 2026, with 50K and 24 mile options. Expect technical terrain and a summit loop that rewards 50K runners with sweeping views of Bear Val..

Tackle a rugged, fatass style adventure run along the scenic North Fork of the American River with 25 and 50 mile options. Expect big climbs, river trail views, and a self supported backcountry race experience.

Run scenic single track along the American River Canyon in Auburn, CA with 50K, half marathon, or 5 mile routes. Celebrate afterward at Ponderosa Cider Co with a commemorative cider glass and post race pours.

Join the inaugural Champion Mine Trail Race in Nevada City for a scenic half marathon or 5K through pines, along Deer Creek, and across a historic swinging bridge. Enjoy stocked aid stations and a locally made finisher medal.