RunRace USA › California › Clo Cow Half Marathon, 10K & 5K
Clo Cow Half Marathon, 10K & 5K
Petaluma, California · Sunday, October 11, 2026 · Half Marathon, 10K, 5K
Official race page & registration ↗Clo Cow Half Marathon, 10K & 5K takes place on Sunday, October 11, 2026 in Petaluma, California. The race offers 3 distances: Half Marathon, 10K, 5K. For anyone travelling in, Rohnert Park is about 8 miles away and Santa Rosa is about 15 miles away.
It is one of 321 races on the California calendar that October.
- Date
- Sunday, October 11, 2026
- Location
- Petaluma, California
- Distances
- Half Marathon, 10K, 5K
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Petaluma: check in Oct 10, out Oct 12.
Common questions
When is Clo Cow Half Marathon, 10K & 5K?
Clo Cow Half Marathon, 10K & 5K is scheduled for Sunday, October 11, 2026.
Where is Clo Cow Half Marathon, 10K & 5K held?
Clo Cow Half Marathon, 10K & 5K is held in Petaluma, California. It is about 8 miles from Rohnert Park and 15 miles from Santa Rosa.
What distances does Clo Cow Half Marathon, 10K & 5K offer?
The listed distances are Half Marathon, 10K, 5K.
How do I register for Clo Cow Half Marathon, 10K & 5K?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
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See every race on the California calendar, California Half Marathons, California 5Ks, or use the Race Finder for maps and filters.