The 12th running of the Clo Cow Half Marathon, 10K & 5K is set to return to 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!

Start Times

Half marathon starts at 7:30 am

10K starts at 7:35 am

5K starts at 7:45 am

Please arrive early, allowing plenty of time before your start time. 

Location & Parking

All races share a common start / finish line, located on Kentucky Street between 'B' Street & Western Avenue.  Free parking is available on the surrounding streets and in two nearby parking garages.  Please do not park in private parking lots or anywhere along the course.  ​

Participant Benefits

​All participants receive a professionally organized race on an accurate course with fast and reliable results using the latest timing technology. A free sweat check will be available to all registered participants. 

All Participants Receive:

Custom cowbell finisher medal​

Performance T-Shirt (gender specific) 

Free race photos, sponsored by ROSIE® The Original Organic Chicken

Well stocked aid stations

Post-race food 

Clover Sonoma chocolate milk

Awards

Overall: Top 1st, 2nd & 3rd male & female in the half marathon.

Course Map

Cost: 

Half Marathon

July 1 - August 31: $97.10

Sept 1 - Sept 22: $102.43

10K

July 1 - August 31: $75.80

Sept 1 - Sept 22: $81.13

5K

July 1 - August 31: $59.83

Sept 1 - Sept 22: $65.15

Register