October 12, 2025
The Clo Cow Half Marathon, 10K & 5K is set for October 12, 2025 in Historic Downtown Petaluma. Our beautiful half marathon course will take you through rural Sonoma County farm country, over rolling hills where you'll be cheered on by sheep, horses, and of course our beloved Moo-Cows! The trip out there is a challenging one, but the inclines just make the views even more rewarding!
Registration fees
Prices are inclusive of mandatory charges, items, and fees
Half Marathon
Price changes in 12 days 10 hours-
Includes T-Shirt, Cowbell medal, Post-race food
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Register for Half Marathon$88.58Now registering Mar 21 – Apr 30
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$92.84May 1 – Jul 31
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$99.23Aug 1 – Sep 30
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$104.56Oct 1 – Oct 12
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10K
Price changes in 12 days 10 hours-
Includes T-Shirt, Cowbell medal, Post-race food
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Register for 10K$67.28Now registering Mar 21 – Apr 30
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$71.54May 1 – Jul 31
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$77.93Aug 1 – Sep 30
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$82.19Oct 1 – Oct 12
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5K Spots remaining: 624
Price changes in 12 days 10 hours-
Includes T-Shirt, Cowbell medal, Post-race food
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Register for 5K$49.18Now registering Mar 21 – Apr 30
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$54.50May 1 – Jul 31
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$59.83Aug 1 – Sep 30
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$65.15Oct 1 – Oct 12
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Youth Discount
Registrants under 18 receive a $10 discount at checkout (applies to all distances)
Top donors
| No. | Name | Amount |
|---|---|---|
| 1 | Marcia Keasler | $107.35 |
Event schedule
- Sun, October 12, 2025 7:30 AM - Half Marathon Start
- Sun, October 12, 2025 7:35 AM - 10K Start
- Sun, October 12, 2025 7:45 AM - 5K Start
Contact information
- Event contact
- Chris Mason
- Website
- Visit website
