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.
Every link above goes to the race, its timing provider, or an official registration partner. Last checked July 22, 2026.
Quick facts
- USATF-certified half-marathon course
- Sunday start on August 23, 2026
- Flat paved creek-trail and greenway route
- 2026 half-marathon field is sold out
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 |
|---|---|---|---|
| 2026 | Sunday, August 23, 2026 | Upcoming | — |
Santa Rosa Half Marathon FAQ
When is the Santa Rosa Half Marathon?
The 2026 Santa Rosa Half Marathon is on Sunday, August 23, 2026.
How do I register for the Santa Rosa Half Marathon?
You can register for the Santa Rosa Half Marathon at santarosamarathon.com.
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