Calero Hills Trail Fest

JUL
25
2026
Trail running at Calero County Park with multiple distances across single track and dirt paths, significant climbs, aid stations and free parking at the park.
Sat 25 Jul 2026
50 kilometers 26 miles 30 kilometers Half Marathon 10 miles 10 kilometers 5 kilometers

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Calero Hills Trail Fest

Calero Hills Trail Fest is a trail running event held at Calero County Park in San Jose, California. Courses use single track, dirt paths and include sustained ascents and descents through oak tree groves with panoramic views and sections exposed to heat. Course ascent values range from about 495 feet for the shortest course to about 4,356 feet for the longest course.

Distances offered include:

  • 5K
  • 10K
  • 10 Mile
  • Half Marathon
  • 30K
  • Trail Marathon

Marked course details vary by distance. Out and back routes are marked with colored ribbons and there are sections on several courses without ribbon markings; some routes require following alternate ribbon colors on specific segments. Aid and water stations are located at the start/finish and at multiple on-course points including Cottle Aid Station, Catamount Trail Water Stop, and Rancho Cañada del Oro Aid Station. The event lists overall cutoffs for longer distances.

Parking is free at the Calero parking lot on McKean Road. Multiple toilets are available at the start area and one toilet is available at the Rancho Cañada del Oro Aid Station. Drop bags are accepted for the Trail Marathon at the start/finish and at the Rancho Cañada del Oro Aid Station. Entry fees are listed by distance and are non-refundable; fee transfers to future events are possible under the event's stated conditions. Technical shirts may be available through registration or at the event. Visit the organization's website for the most recent information.

50 km
50k
26 mi
Trail Marathon
30 km
30k
Half Marathon
Half Marathon
10 mi
10 Mile
10 km
10k
5 km
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