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Clo Cow Half Marathon, 10K & 5K

13th Annual

October 12, 2025

Join us on October 12, 2025 for the Clo Cow Half Marathon, 10K & 5K in charming Historic Downtown Petaluma! Wind your way through picturesque Sonoma County farmland and rolling hills, where friendly sheep, horses—and of course Moo-Cows—will cheer you on every step of the way. Sure, those climbs are a challenge, but the sweeping country views at the top are well worth the effort!

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The 5K and 10K is sold out

These options are available:
1. Join the waitlist and only be charged if your registration is accepted
2. Transfer from someone unable to attend. Email us at info@chickenandcowproductions.com

Please be cautious and don't send money to a stranger unless you are 100% sure they have a legitimate entry. There are scammers on social media pretending to have entries to sell.

Registration fees

Prices are inclusive of mandatory charges, items, and fees

Half Marathon Spots remaining: 8

Registration closes in 8 days 19 hours

  • Includes T-Shirt, Cowbell medal, Post-race food

    1. $88.58

      $82 + Processing Fee

      Mar 21 – Apr 30
    2. $92.84

      $86 + Processing Fee

      May 1 – Jul 31
    3. $99.23

      $92 + Processing Fee

      Aug 1 – Sep 30
    4. $104.56

      $97 + Processing Fee

      Now registering Oct 1 – Oct 12
      Register for Half Marathon

10K Sold out

Registration closes in 8 days 19 hours

  • Includes T-Shirt, Cowbell medal, Post-race food

    1. $67.28

      $62 + Processing Fee

      Mar 21 – Apr 30
    2. $71.54

      $66 + Processing Fee

      May 1 – Jul 31
    3. $77.93

      $72 + Processing Fee

      Aug 1 – Sep 30
    4. $82.19

      $76 + Processing Fee

      Now registering Oct 1 – Oct 12

5K Sold out

Registration closes in 8 days 19 hours

  • Includes T-Shirt, Cowbell medal, Post-race food

    1. $49.18

      $45 + Processing Fee

      Mar 21 – Apr 30
    2. $54.50

      $50 + Processing Fee

      May 1 – Jul 31
    3. $59.83

      $55 + Processing Fee

      Aug 1 – Sep 30
    4. $65.15

      $60 + Processing Fee

      Now registering Oct 1 – Oct 12

5K Waitlist

Registration closes in 8 days 19 hours

  • Your card will only be charged if accepted

    1. $59.83

      $55 + Processing Fee

      Mar 21 – Sep 30
    2. $65.15

      $60 + Processing Fee

      Now registering Oct 1 – Oct 12
      Register for 5K Waitlist

10K Waitlist

Registration closes in 8 days 19 hours

  • Your card will only be charged if accepted

    1. $77.93

      $72 + Processing Fee

      Mar 21 – Sep 30
    2. $82.19

      $76 + Processing Fee

      Now registering Oct 1 – Oct 12
      Register for 10K Waitlist

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
2 Jackie Magliari $107.35
3 Catherine Bevanda $107.35
4 Trang Nguyen $107.35
5 Geri Johnston $54.10
6 Anonymous $54.10

Contact information

Event contact
Chris Mason
Website
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