Calero Trail Run - Winter
San Jose, United States • 6 Dec 2025
Event overview
The Calero Trail Run - Winter takes place on Saturday, December 6, 2025, in San Jose, California. The event offers multiple trail distances and a kids run.
- 50K
- Trail Marathon
- 25K
- Half Marathon
- 15K
- 10K
- 5K
- Mile
- Kids Run
Course and logistics
The event begins at Calero County Park, 23205 McKean Road, San Jose, CA 95120. The course uses single track and dirt paths and includes hills, oak trees, exposed sections, and panoramic vistas. Courses are marked with ribbons, signs, and gypsum. Aid stations are provided and all finishers receive a commemorative medal.
Bib pick-up and registration occur on race day, and race day registration is available. Participants are advised to go to the Calero Park entrance on McKean Road and not to the reservoir boat launch ramps. Detailed course descriptions and maps are provided for each distance. Visit the organization's website for the most recent information.