San Lorenzo River Trail Run

Santa Cruz, United States • 11 Jul 2026

Trail Running in the Coastal Redwoods

The San Lorenzo River Trail Run takes place in Santa Cruz, California, starting at the Friendship Picnic Area in Harvey West Park. Participants travel through a diverse natural landscape featuring Coastal Redwoods that reach heights of 300 feet and ages up to 1500 years. The course transitions between lush stream canyons, open meadows, pine and oak forests, and ridges covered in high dry chaparral.

The event offers several distances for participants:

  • 50K trail race
  • Marathon (26.2 Miles) trail race
  • 30K trail race
  • Half Marathon (13.1 Miles) trail race
  • 10K (6.3 Miles) trail race
  • Coastal Testing (2 Miles) running race
  • Kid's Run (0.25 Miles) for children aged 6 and younger

Course distances are measured using a surveyor's measuring wheel to ensure accuracy. Those participating in the Half Marathon, 30K, Marathon, and 50K distances will cross the San Lorenzo River multiple times during their run. The event provides a free 1/4 mile run specifically for young children. Visit the organization's website for the most recent information.

Race information

50 km
50k
26 mi
Marathon
30 km
30k
13 mi
Half Marathon
6 mi
10k
Coastal Testing
Kid's Run (6yo & Younger, 1/4 Mi) - Free!
Visit the organization's website for the most recent information.
Trail runs nearby

Multiple trail distances from 5K to 50K on very hilly single track and dirt roads at Rancho Cañada del Oro. The course features scenic foothill views, two aid stations, enforced cutoffs, and finishers receive a medal.

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.

A trail running event on Aug. 8, 2026 in Gilroy, California through redwood groves and peak viewpoints. Distances include a 5K, 10K and half marathon with significant elevation gain, and proceeds support youth scholarships.

Trail races on hilly mixed dirt and single track at Almaden Quicksilver Park with distances from 5K to 50K, aid stations, drop bag service for longer races, and mandatory course markings and cutoffs.

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