San Lorenzo River Trail Run
Saturday, July 10, 2027, first start 7:50 AM, in Santa Cruz (Harvey West Park (Friendship Picnic Area)). Distances: 2 miles, 10K, Half marathon, 30K, Marathon, 50K. Entry from $60 to $90; the 10K goes from $60 to $70 after July 4.
- Date
- Saturday, July 10, 2027
- Start time
- 7:50 AM (earliest wave)
- Location
- Harvey West Park (Friendship Picnic Area), Santa Cruz, CA 95060
- Area
- Santa Cruz, SF Bay Area
- Distances
- 2 miles10KHalf marathon30KMarathon50K
- Course
- Trail (dirt or single-track on at least part of the course)
- Price
- $60 to $90 plus the platform's processing fee
- Next price increase
- Sunday, July 4, 2027: 10K $60 → $70
- Registration
- Open. Opened July 20, online signup closes Saturday, July 10, 2027
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details. Sign up by July 4 to pay $60 instead of $70.
Course and race notes
Run through 300 foot tall, 1500 year-old Coastal Redwoods, lush stream canyons, open meadows, pine and oak forests, and high dry chaparral-covered ridges. The Half Marathon, 30K, Marathon, and 50K events cross the San Lorenzo River (shown above) multiple times!
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.