Clo-Cow Half Marathon

Race Technical Difficulty Score (RTDS) = 4

The 9th running of the Clo Cow Half Marathon, 10K & 5K is set for September 15, 2019 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!

september, 2019

sun15sep6:00 am2:00 pmClo-Cow Half MarathonView More DetailsVisit Race Site


(Sunday) 6:00 am - 2:00 pm


Petaluma Half Marathon

Western Ave & Kentucky St. Petaluma Ca. 94952

View More Details

View More Details

Visit Race Site

Visit Race Site

To learn more, visit our frequently asked Questions page.  FAQ