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San Lorenzo River Trail Run

Name: San Lorenzo River Trail Run
Start: 2026-07-11
End: 2026-07-11
Location: Santa Cruz

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.

United States California Santa Cruz

Race information

Registration

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

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Monterey Spartan Event Weekend

Salinas

Mud Run / Obstacle Run

5 km

10 km

An obstacle race weekend at Toro Park near Salinas on May 30-31, 2026, featuring a 5 km Sprint with 20 obstacles, a 10 km Super with 25 obstacles, kids races and trail events across wooded, hilly coastal terrain.

Saturday May 30

Calero Trail Run - Spring

...

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The Toro Park Trail Run offers 10K, half marathon, and marathon distances on the rocky trails and dirt roads of California's Toro Park. The summer event features rolling golden hills and oak trees. It is held as part of a Spartan festival w..

Saturday Jun 6

Mt Umunhum Ultras

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A trail event at Almaden-Quicksilver County Park on June 7, 2025 offering distances from 5K to 50K, steep climbs, marked courses, aid stations, and toilet facilities. The 52 mile race is not held in 2025 and is planned to return in 2026.