Calero Trail Run (Winter)

Saturday, December 7, 2024 San Jose, CA

Calero Trail Run - San Jose CA

Venture into the heart of nature with our exceptional trail run, commencing at the picturesque Calero County Park. If you’re seeking a trail running experience that has it all, you’ve come to the right place.

This course is a haven for trail enthusiasts, offering an array of diverse terrain. Get ready to tackle breathtaking single tracks, surmount exhilarating hills, and navigate through rugged dirt paths. For those who are aiming high, our 50K course is an ideal test and training ground, mirroring the challenges of the renowned Western States race. The journey will lead you amidst ancient oak trees, through stretches of open exposure for heat training, and provide you with jaw-dropping panoramic vistas.

To ensure you stay on track, courses are meticulously marked with ribbons, signs, and gypsum. And while you conquer the miles, please make sure to dress appropriately for an endurance run.

The sense of accomplishment you’ll feel as you cross the finish line is something we want every participant to remember. That’s why all finishers will receive a well-deserved commemorative medal.

Rest assured, we’ve got your hydration and refueling needs covered. Aid stations will be strategically placed along the route, ready to provide the support you require to conquer this remarkable trail run.

Join us in celebrating the outdoors, testing your limits, and connecting with fellow trail running enthusiasts. This event promises to be an unforgettable journey through some of nature’s finest offerings. Come prepared for an epic day on the trails, where the experience and the views will leave an indelible mark on your running adventures.

Race Weather & Climate

In Santa Clara County, San Jose, California, thrives as the center of technology.

December 7th in San Jose, CA marks the heart of winter with average high temperatures of 59-63°F and average low temperatures of 41-45°F. The weather is cool and crisp, signifying the midst of the winter season. Rainfall during this period is generally minimal, contributing to a dry and cooler mid-winter ambiance in the city.

Calero Trail Run Race Results

Calero Trail Run Course Map

See the race route map for the Calero Trail Run course map here.

Starting Time

The half marathon start time is 8:00 AM.

The time limit for the half marathon is 4.5 hours.


To reserve your spot in the 2024 Calero Trail Run, you can use the registration link here.

Race Fees

  • There is a $95 ($100 after Dec 1) fee for the half marathon.
  • There is a $125 ($130 after Dec 1) fee for the 50K.
  • There is a $115 ($120 after Dec 1) fee for the trail marathon.
  • There is a $105 ($110 after Dec 1) fee for the 25K.
  • There is a $85 ($90 after Dec 1) fee for the 15K.
  • There is a $75 ($80 after Dec 1) fee for the 10K.
  • There is a $65 ($70 after Dec 1) fee for the 5K.
  • There is a $30 ($35 after Dec 1) fee for the 1 Mile.
  • There is a $25 ($30 after Dec 1) fee for the Kids Run.

Calero Trail Run Race Website

Calero Trail Run Website

See more races in: December, California