When is Calero Trail Run?

Calero Trail Run takes place on May 30, 2026. That's in 6 days.

Where is Calero Trail Run located?

Calero Trail Run is held in San Jose, California, United States.

What distances are available at Calero Trail Run?

Calero Trail Run offers the following distances: 50K, 26.2M, 25K, 13.1M, 15K, 10K, 5K.

What is the typical weather for Calero Trail Run?

Based on historical data, you can expect temperatures between 54°F and 77°F on race day. There's approximately a 1% chance of precipitation.

Calero Trail Run (5K-50K) - May 30, 2026 | San Jose, CA

Embark on an unforgettable journey through the scenic Calero County Park at the Calero Trail Run on May 30, 2026, in San Jose, CA. Organized by Troy's California Trail Runs, this event offers a diverse range of distances, including a 50K, 26.2M marathon, 25K, 13.1M half marathon, 15K, 10K, and 5K, catering to trail enthusiasts of all levels. Runners will navigate predominantly single-track and dirt paths, experiencing challenging climbs and descents through oak groves and rugged terrain, all while enjoying breathtaking panoramic vistas.

The Calero Trail Run is renowned for its well-marked courses and supportive atmosphere, making it a fantastic training ground, especially the 50K, which is noted for its challenging elevation and excellent heat preparation for events like Western States. Typical race day conditions in late May bring comfortable highs around 76F and lows around 54F, with a minimal 1% chance of precipitation, providing ideal weather for tackling the hills. Aid stations are strategically placed along the route to support runners, with drop bag options available for 50K participants at the start/finish and an additional aid station at the Rancho Cañada del Oro parking lot.

Beginning at Calero County Park, located off McKean Road (runners should note that some GPS might incorrectly direct to the reservoir boat launch), every finisher receives a commemorative medal to celebrate their accomplishment. Whether you're seeking a short, scenic introduction to trail running or an intense ultra-training experience, the Calero Trail Run promises an epic day on the trails with awesome single track and memorable views.