Santa Rosa Half Marathon
Santa Rosa Half Marathon follows paved creek paths and the Prince Memorial Greenway on a flat, certified course through Sonoma County in late summer.
Quick facts
- USATF-certified half-marathon course
- Flat paved creek-trail and greenway route
- The half-marathon field sells out
- Narrow trail sections and late-summer sun once the field spreads
About the Santa Rosa Half Marathon
The Santa Rosa Half Marathon is the 13.1-mile race at a long-running Sonoma County weekend. It has its own certified course, later start and sold-out field, making it distinct from the full marathon rather than a simple split option.
Course
The paved route uses the Santa Rosa Creek Trail and Prince Memorial Greenway. Its low-relief profile supports steady pacing, though narrow trail sections and August sun can matter once the field stretches out.
Race-day weather
Late August in Santa Rosa usually favors a cool morning start followed by quick warming. Dry air and exposed greenway miles make early hydration important even when the first miles feel mild.
Past Santa Rosa Half Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2027 | Sunday, August 22, 2027 | Upcoming | — |
| 2026 | Sunday, August 23, 2026 | Results available | Open results |
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Santa Rosa Half Marathon FAQ
When is the Santa Rosa Half Marathon?
The 2027 Santa Rosa Half Marathon is on Sunday, August 22, 2027.
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