Calero Trail Run - Winter

The ZombieRunner Quarry Lakes event, scheduled for December 7, 2024, in Fremont, California, features a variety of running distances including a 5K, 10K, Half Marathon, 30K, and Marathon, along with youth categories and a free Kid's Run. The scenic course begins at Quarry Lakes Regional Recreation A..

The Summit Rock Half Marathon, along with 10K and 5K events, takes place in the scenic Sanborn County Park, Saratoga, CA, on December 14, 2024. Participants can enjoy running through beautiful redwood groves and single-track trails, with the half marathon and 10K featuring challenging ascents and br..

The Woodside Ramble, organized by Inside Trail Racing, is a trail running event set in the scenic Huddart County Park in Woodside, California. Scheduled for December 21, 2024, it features multiple race distances including 10K, Half Marathon, 35K, and 50K, catering to runners of all skill levels. Par..

The Brazen New Year's Eve event offers participants the chance to run a half marathon, 10K, or 5K at Lake Chabot in Castro Valley, California. This event is designed for runners of all levels, including hikers and walkers. It serves as a festive way to close out the year, allowing participants to en..

The Brazen New Year's Day event offers a scenic and invigorating start to the year with races at Lake Chabot in Castro Valley. Participants can choose from a half marathon, 10K, or 5K, making it a family-friendly occasion. The event encourages runners to kick off their New Year’s resolutions in a fu..

The Hacienda Hills Trail Run - Winter is an exciting trail running event taking place at Almaden Quicksilver County Park in San Jose, California. Scheduled for January 4, 2025, this event features nine different race distances, including a Kids Run, 5K, 10K, half marathon, marathon, and a challengin..