Clo Cow Half Marathon

The Clo Cow Half Marathon, 10K & 5K is held in Historic Downtown Petaluma, California, and offers three distances: half marathon, 10K, and 5K. The 13th annual edition attracts about 1,500 runners and walkers. The course winds through rural Sonoma County farm country with rolling hills, rewarding climbers with scenic views while participants are cheered by sheep, horses, and moo-cows along the way.

A post-race festival near the finish line adds to the festive atmosphere. A signature feature is the cowbell medal awarded with all distances, along with T‑shirts and post-race food. Proceeds support the Petaluma Educational Foundation, with sponsor/vendor opportunities available. Visit the organization's website for the most recent information.