Clo Cow Half Marathon
Race Day Weather
Cool start, warming up, mild winds
Runners will face a cool start at 45°F, gradually warming to 66°F by the finish. With an average humidity of 74%, it’s advisable to start conservatively and adjust pace accordingly. Light headwinds will challenge runners from miles 1 to 7, while tailwinds will provide relief from miles 8 to 10. Pre-race, the feels-like temperature drops to 43°F, suggesting a throwaway layer for the wait.
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Race Info
The Clo Cow Half Marathon is an annual road race held in Petaluma, California, with half marathon, 10K, and 5K distances. The out-and-back half marathon course starts and finishes on Kentucky Street in historic downtown Petaluma and runs through Sonoma County farmland and rolling hills. Spectators along the rural stretch include sheep, horses, and cows, and finishers receive a cowbell medal. The race benefits the Petaluma Educational Foundation.
