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Calero Trail Run - Winter

San Jose, United States • 6 Dec 2025

The Calero Trail Run - Winter is a versatile trail running event held at Calero County Park in San Jose, California. It offers a range of distances including a 50K, trail marathon, 25K, half marathon, 15K, 10K, 5K, mile, and a kids run, catering to all levels of runners. The course features scenic single-track trails, challenging hills, oak tree landscapes, and panoramic views, making it an excellent training ground for endurance events like the Western States. The race includes well-marked routes with aid stations and commemorative medals for finishers. Registration and bib pick-up occur on race day, with detailed course maps available online. Visit the organization's website for the most recent information.

United States California San Jose

Race information

Website Registration
50 km
50k
42 km
Trail Marathon
25 km
25k
21 km
Half Marathon
15 km
15k
10 km
10k
5 km
Mile
Kids Run
Visit the organization's website for the most recent information.
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