Clo Cow Half Marathon

OCT

11

2026

The 14th annual Clo Cow event offers a half marathon, 10K, and 5K through Sonoma County's scenic farmland near Petaluma. Runners receive a cowbell medal, shirt, and post-race food. This community run benefits the Petaluma Educational Foundation.

Sun 11 Oct 2026

Petaluma, California

Website Registration

Half Marathon 10 kilometers 5 kilometers

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Event Overview

The Clo Cow Half Marathon, 10K & 5K is a running event taking place on October 11, 2026. It is the 14th annual edition of this event. The start and finish location is in Historic Downtown Petaluma, California.

Distances

The event offers three race distances:

Half Marathon
10K
5K

Course & Location

The course winds through Sonoma County farmland and rolling hills. The route features climbs and offers country views.

Registration & Fees

Registration includes a T-Shirt, a Cowbell medal, and post-race food. A youth discount of $10 is available for registrants under 18 years old. Prices increase at set intervals, with the lowest rates available from January 15 to April 30, 2026.