San Lorenzo River Trail Half Marathon
2027 at a glance
- Entry open
- Race day
- ResultsAfter race day
- Race day
- Jul 10, 2027 Saturday
- Distance
- 13.1 mi Half marathon
- Entry
- Open
- Latest results
- 2026
Quick facts
- Out-and-back with river crossings
- Coastal redwood forest
- No paved sections
- Free parking at Harvey West Park
Course
The pink-flagged out-and-back mixes singletrack and dirt road, with no asphalt, and passes coastal redwoods, meadows, and pine and oak forest. Headphones are allowed only on dirt road sections.
Race-day weather
Summer mornings in Santa Cruz are often gray and cool near the river, warming once the fog lifts.
About the race
Runners check in from 7 a.m. at the Friendship picnic area in Harvey West Park, and the half starts at 8 a.m. Shirts are guaranteed for runners registered at least 10 business days ahead.
Dates and results by year
Ran it?
Tell the next runner what it was like
FAQ
When is the San Lorenzo River Trail Half Marathon?
The 2027 San Lorenzo River Trail Half Marathon is on Saturday, July 10, 2027.
Is registration open for the 2027 San Lorenzo River Trail Half Marathon?
Entry for the 2027 San Lorenzo River Trail Half Marathon is open, as of Nov 15, 2026. Entry details: runsignup.com.
Where can I find the San Lorenzo River Trail Half Marathon results?
The 2026 results and earlier years are on the results page.
Featured collections
Organize this race, or spot a mistake? Tell us and we’ll fix it.