Trail Running calendar near Monterey 2025-2026

Join the ZombieRunner Halloween at Hellyer County Park in San Jose for a spooky, family friendly race day with distances from a kids dash to a full marathon. Costume contest, festive aid stations, and custom finisher medals add extra fun.

Challenge yourself on the Almaden Hills Trail Run in San Jose on November 1 at Almaden Quicksilver Park. Scenic, very hilly trails with dirt roads and single track offer distances for every runner from 5K to 50K.

Enjoy scenic redwood trails at Huddart Park with distances from 3 Mile to Half Marathon, plus a family Mermaid Dash for kids. Try the festive 6 Hour Challenge to see how many 3 Mile loops you can cover, or join virtually.

Join scenic trails around Lake Chabot on November 8, 2025 with distances from 8K to 50K and a free kids dash. Expect rolling hills, well marked routes, finisher medals and tech shirts for pre registered runners at the Marina.

Take on the rolling, scenic trails of Rancho Cañada del Oro in Morgan Hill with distances from 5K to 50K. Expect challenging hills, mixed singletrack and fire road, creek crossings and big views framed by old oaks for a true trail running a..

Test your grit in a Last One Standing challenge at Smith Ranch: run a 4.18 mile loop each hour on scenic dirt trails until only one remains. Camp, hearty aid station fare, campfire and a western style buckle for the final finisher.

Run the scenic 10 km dirt loop at Smith Ranch for a weekend of trails, live music, nightly bonfires, and family friendly fun. Distances range from 5 km to 48 hour events, with awards for all finishers and handcrafted trophies for top runner..

Celebrate Thanksgiving at the Zoom Turkey Trot in San Jose at Hellyer Park with a USATF certified half, 10K, 5K and kids runs, plus t shirts and finisher medals. Flat, fast courses and stocked aid stations welcome all abilities.

Join the Quarry Turkey at Quarry Lakes on November 29 for a fast, mostly flat trail 5K, 10K or half marathon with a free kids sprint and family friendly Thanksgiving costumes encouraged. Proceeds benefit Alameda County Community Food Bank.

Tackle scenic singletrack and dirt at Calero County Park in the Calero Trail Run Winter, with distances from a kids mile to a 50K. Expect rolling hills, oak vistas, aid stations, a finishers medal and race day registration.

Run anything from a 50 yard kids dash to a marathon at Quarry Lakes Regional Recreation Area in Fremont, CA on Dec 6, 2025. Enjoy a mostly flat, scenic Alameda Creek Trail course with pre registered shirts, custom finisher medals and aid st..

Run through redwood groves on winding single track trails in the Santa Cruz Mountains at Summit Rock, a scenic trail race just outside Silicon Valley. Half marathon, 10K and 5K distances welcome walkers and hikers with a separate hiker star..

Experience the Woodside Ramble at Huddart County Park in Woodside CA, a scenic trail run through redwoods and ridge top manzanita. Choose from 10K, half marathon, 35K or 50K for a well marked, chip timed day with aid stations.

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.

Start the year on scenic Lake Chabot trails with Brazen New Year's Day, offering half marathon, 10K, 5K and virtual options with timed results and free photos. Celebrate challenging trail miles and earn a commemorative medal.

Enjoy Bay Area views and varied singletrack at Hacienda Hills Trail Run Winter near San Jose on Jan 3, 2026. Choose from nine distances up to 50K, enjoy marked courses, aid stations and a finisher medal.

Take on scenic, well marked trails at Huddart Park with distances from 8K to 50K plus a free kids dash. Stocked aid stations, custom finisher medals and challenging climbs make this a rewarding trail day for all abilities.

Explore towering redwoods and fern lined trails at Crystal Springs Trail Run in Huddart Park, with distances from a Kid's Run up to 50K. Pre registered runners get T shirts and all finishers earn custom medals on a scenic, marked course.

Take on the Pacifica Foothills Trail Run on January 24, 2026 at San Pedro Valley County Park. Choose 30K, half marathon or 10K across Montara Mountain single track for rugged coastal views, chip timed results and well stocked aid stations.

Enjoy scenic trails and marsh boardwalks at Coyote Hills Regional Park in Fremont on January 31, 2026, with 5K, 10K and half marathon options. Updated courses, friendly aid stations and a hiker division make this a welcoming race for every..