It's a kick-off event for the 55th Annual Western Stampede.
The cows will make their way down Robertson Boulevard to the fairgrounds.
For more than 50 years, the Western Stampede has been the traditional Grand Prix Roping Event in Chowchilla.
All the fun starts Wednesday at 10 a.m. The rodeo runs through Sunday and brings in some of the most talented ropers in the sport of rodeo.