Race Roster

Clo-Cow Half Marathon, 10K & 5K
Make it a Clo's Race!


The 7th running of the Clo-Cow Half Marathon, 10K & 5K is set for September 17, 2017 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

Half Marathon Sold out

Includes T-Shirt, Cowbell Medal, Post-race food

10K Sold out

New for 2017! Includes T-Shirt, Cowbell Medal, Post-race food

5K Sold out

Includes T-Shirt, Cowbell Medal, Post-race food

Run for Free!

Register 4 or more entries and one entry will be free!  Grab your family, friends and co-workers and save $$ when you register together!  Use promo code RUNFREE

Terms & conditions:  Valid for new entries only.  All entries must register for the same distance, although it is possible to transfer entries to a different distance for a $1.95 transfer fee + incremental cost. Use promo code RUNFREE for all entries.  Not combinable with any other offers.  

Event Schedule

  • September 17 7:00 AM PDT - Half Marathon Start

  • September 17 7:05 AM PDT - 10K Start

  • September 17 7:10 AM PDT - 5K Start

Contact Information

Event Location

Kentucky Street, Petaluma, CA, United States

Click here to view map