Articles

Belgian Ultrarunner Karel Sabbe's Record-Breaking Pacific Crest Trail Run Showcased in New YouTube Documentary

Explore Karel Sabbe's record-breaking Pacific Crest Trail run in a riveting documentary. Jour..

Trail Running: How it Can Help Reduce Stress and Anxiety

Trail running is an effective way to reduce stress, anxiety, and improve physical and mental he..

Trail Running vs. Road Running: Which One Is Right For You?

When it comes to running, there are two primary options to choose from: trail running and road..

Calero Trail Run - Spring

Name: Calero Trail Run - Spring
Start: 2025-05-31
End: 2025-05-31
Location: San Jose

San Jose, United States • 31 May 2025

The Calero Trail Run - Spring takes place at Calero County Park in San Jose, California, offering a variety of distances including 50K, marathon, 25K, half marathon, 15K, 10K, 5K, mile, and a kids run. The course features diverse terrain with single track trails, hills, dirt paths, oak trees, and panoramic vistas, making it a challenging and scenic experience. The 50K distance serves as excellent training for Western States, incorporating exposure and heat conditions.

The event provides marked courses, 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

26 mi

Marathon

25 km

25k

13 mi

1/2 Marathon

15 km

15k

10 km

10k

5 km

Mile

Kids Run

Visit the organization's website for the most recent information.

Trail runs nearby

Saturday Jun 13

Henry W. Coe Hunting Hollow 10K

San Martin

5 km

10 km

Annual 5 km and 10 km run and walk in Hunting Hollow at Henry W. Coe State Park, on a relatively flat dirt road through valleys with late spring wildflowers and possible wildlife sightings. Proceeds support Pine Ridge Association projects a..

Fri - Mon Jun 26-29

The Rock The Loch Half Marathon

Live and virtual options at Lake Chabot feature 5K, 10K, and a half marathon with multiple aid stations, on-course nutrition, race apparel and a woodallion, post-race beverages, and a brewfest atmosphere.

Friday Jul 3

Independence Day Dash 5K - Livermore

Livermore

400 m

5 km

A community Independence Day event at Sycamore Grove Park featuring a flat 5K on mixed paved and dirt trails and a 400 meter kids run for ages 10 and under. T shirts are included with race fees.

Saturday Jul 4

Rancho Hills Trail Run - Summer

...

A multi-distance trail event at Rancho Cañada del Oro Open Space Preserve on July 4, 2026, with routes from 5K to 50K over hilly single track and dirt roads. Two fully stocked aid stations support runners and time limits range from 1 to 9 h..