Trail Running calendar near Vineyards - Avalon 2025-2026

Celebrate Thanksgiving with a flat, scenic course at Quarry Lakes in Fremont offering a half marathon, 10K, 5K and a Little Turkeys kids dash. Costume friendly, walkers welcome, and donations support the Alameda County Community Food Bank.

Run Krampus Cross Country in San Francisco live on Dec 7 or virtually Dec 5 to 8 with 5K 10K and the Naughty Nine Miler. All entrants get a wooden woodallion a Krampus tee and a beer sampler stein plus a brewfest on Dec 5.

Choose distances from a kids 50 yard dash to a full marathon as you run scenic Quarry Lakes and the Alameda Creek Trail in Fremont. Enjoy stocked aid stations, finisher medals and pre registered shirts with park entry included.

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.

Peacock Gap Trail Run offers three scenic trail distances through China Camp and Harry Barbier parks near San Rafael. Expect technical singletrack, big views and well stocked aid stations; bring your own bottle or reusable cup for this cupl..

Run the iconic Hunter S. Thompson Fear & Loathing in San Francisco on December 7, a free grassroots single loop that winds past city landmarks and finishes at Twin Peaks. Choose 50 mile or 50K distances and help support Shoes For Runners.

Run through towering redwoods at Sanborn Regional Park with half marathon, 10K and 5K options plus a remote runner choice. Expect scenic climbs, narrow single track trails, professional chip timing and custom finisher medals.

Experience a scenic loop around Angel Island with views of the Golden Gate and Alcatraz at the 37th Hark the Herald, offering a half marathon and a hilly 10K. Limited to 400 runners, includes ferry transport and finisher swag.

Woodside Ramble on December 20, 2025 winds through Huddart and Wunderlich parks near Woodside, CA, mixing scenic singletrack and fire roads. Multiple distances from 10K to 50K welcome trail runners in a capped, festive field.

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 the trails around scenic Lake Chabot with a challenging half marathon, 10K, 5K or remote option. Run both Brazen New Year's Eve and New Year's Day to earn the New Year Mega 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.

Join Hope in Every Step 5K in Modesto, California on January 10, 2026 for a scenic run and walk along the Tuolumne River Parkway trails. Enjoy community vibes, teal race shirts, and friendly competition with awards for top finishers.

Run through towering redwoods and fern filled trails at Huddart Park with distances from 8K to 50K plus a free kids run. Well stocked aid stations and scenic single track make this a perfect challenge for trail lovers.

Run through redwood lined trails at Huddart Park in the Crystal Springs Trail Run, with distances from 8K to 50K plus a free kids sprint. Enjoy scenic single track, frequent aid stations and a commemorative finisher medal.

Run the scenic, technical trails of Montara Mountain at the Pacifica Foothills Trail Run in San Pedro Valley Park, with 30K, half marathon and 10K options for all abilities. Full aid stations and sweeping coastal views make this a must for..

The Golden Gate Trail Classic will take place in San Francisco from Saturday 24 January 2026 to Sunday 25 January 2026. You can run between 15 and 50 miles.

Run along the San Francisco Bay at Coyote Hills Regional Park in Fremont with half marathon, 10K and 5K options plus a remote entry. Trails, boardwalks and paved paths make for a scenic, low climb course and walkers are welcome.

Jed Smith Ultra Classic in Sacramento on January 31, 2026 offers scenic looped courses along the American River Parkway with distances from 50 miles to the half marathon. Entrants receive a shirt and finishers a handcrafted wooden medal.

Run scenic, rugged trails around Mt. Umunhum at Almaden Quicksilver Park with distances from a mile and kids run up to 50K. Clearly marked courses, aid stations and medals for all finishers make this winter trail event welcoming to all.