Trail Running calendar near Modesto 2025-2026

Ring out the year with Almost New Year's Eve at scenic Lake Chabot in Castro Valley on 12/27/25. Trail routes for runners, walkers and hikers include 5K, 10K and half marathon distances with free post race photos.

Kick off 2026 on Lake Chabot trails with Brazen New Year’s Day, featuring scenic half marathon, 10K, 5K and remote options. Enjoy a festive trail vibe, free photos and the chance to earn a Mega Medal while supporting local parks.

Run scenic trails through Hacienda Hills at Almaden Quicksilver Park with distances for every level, from kids runs to ultramarathons. Take in Bay Area views, use on course aid and day of race registration, and earn a commemorative finisher..

Run scenic shoreline single track at Granite Beach with 12K and 5K options, then toast your effort with a custom IPA glass and locally brewed beer for participants 21 and over. Enjoy post race food and age group awards in a lively community..

Join Hope in Every Step 5K in Modesto for a family friendly run or walk along the scenic Tuolumne River Parkway. Gear up with a teal event shirt, compete for awards, and help support local youth through Sole Support.

Run the scenic El Dorado Trail from Placerville to Folsom in the Double Double Double 50K, a mostly runnable, gently downhill ultramarathon on Jan 10, 2026. Low key support and post run Double Double treats make this a relaxed, fun challeng..

Run or walk at Sycamore Island on Sunday, January 11, 2026 with 5k and 10k options over scenic single track and dirt roads. Support local river conservation while earning a custom finisher medal and event shirt.

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.

Run through redwood and fern groves at Huddart Park at the Crystal Springs Trail Run on Sunday, January 18, 2026, with distances from a fun 8K and kids dash to challenging marathon and 50K ultras. Aid stations, custom medals and race suppor..

Run the Sweetwater Trail at Folsom Lake on Jan 24 with distances from kids run to 50K on mostly single track through oak woods and rolling hills. All finishers get a commemorative medal and aid stations support longer routes.

Hit the scenic shoreline trails of Folsom Lake on January 24, 2026 with the Gumby 5K and 10K at Granite Beach. Enjoy well marked single track, finisher medals and Gumby themed shirts available for preorder.

Experience iconic San Francisco trails as Spartan Trail takes runners over the Golden Gate Bridge into the Marin Headlands. Distances from 15K to 50M make this coastal challenge a fitting finale for the Spartan Trail World Championship.

Coyote Hills 2026 in Fremont on Jan 31 invites runners to choose a half marathon, 10K, 5K or remote entry along scenic bayfront trails and boardwalks. Expect easy climbs, great shoreline views, free photos and community vibes.

Run the 48th Jed Smith Ultra Classic on January 31, 2026 in Sacramento along a scenic mostly flat loop on the American River Parkway. Choose 50 miles, 50K, marathon, 30K or half marathon and enjoy a long sleeve tech shirt and handcrafted fi..

Hit the trails at Hensley Lake in Raymond California this early February for a scenic 10 kilometer run and a full day of mountain bike racing. Choose from multiple mountain bike lap races for adults, a juniors event, and a kids ride.

Conquer scenic natural surface trails and the Mt Umunhum ascent at Trail Conquest Winter in Almaden Quicksilver County Park, with distances from a kids run to 50K. Race day registration, aid stations and a commemorative medal for finishers.

Run scenic shoreline trails at Escape from Folsom Trail Runs on Feb 7 and 8, 2026 at Granite Beach, Folsom Lake. Choose a 5K or 10 Mile and earn a finisher medal while enjoying aid stations and lake views.

Join the JW House Hope Run at Vasona Lake Park for a scenic 5K or 10K that welcomes runners, walkers, and teams. Family and stroller friendly, this community event raises funds to support families facing medical crises.

Enjoy a scenic bayside run at Bay Breeze 2026 in San Leandro Marina Park on February 14. Choose a half marathon, 10K, 5K or remote option on a mostly flat route by the water, with walkers welcome and free photos.

Chabot Redtail Ridge Trail Run at Lake Chabot Regional Park in Castro Valley on February 21, 2026. Choose distances from 5K to 50K and tackle scenic, moderately technical trails with aid stations and finisher medals for a memorable day on t..