San Lorenzo River Trail 50K
2027 at a glance
- Entry open
- Race day
- ResultsAfter race day
- Race day
- Jul 10, 2027 Saturday
- Distance
- 50 km Ultramarathon
- Entry
- Open
- Latest results
- 2026
Quick facts
- 30K route plus the half course
- About 5,175 feet of gain
- 5 hour cutoff at mile 18
- Custom coaster for finishers
Course
Runners first cover the 30K, out to the Henry Cowell aid station, around a five-mile orange loop and back, then add the half marathon out-and-back. The 50K cutoff is 5 hours at mile 18, and the course is about 60 percent singletrack.
Race-day weather
July in the Santa Cruz Mountains is dry, with shade under the redwoods and sun on the open ridges.
About the race
The 50K starts at 8 a.m. with the marathon and 30K, and drop bags can be left at the start and finish. Finishers receive a custom coaster along with their medal.
Dates and results by year
FAQ
When is the San Lorenzo River Trail 50K?
The 2027 San Lorenzo River Trail 50K is on Saturday, July 10, 2027.
Is registration open for the 2027 San Lorenzo River Trail 50K?
Entry for the 2027 San Lorenzo River Trail 50K is open, as of Nov 15, 2026. Entry details: runsignup.com.
Where can I find the San Lorenzo River Trail 50K results?
The 2026 results and earlier years are on the results page.
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