How interesting! I can see why you like racing of all kinds!
On Memorial Day (Decoration Day, then and always on May 30) they had a demolition derby. They would prepare the track for the cars and as soon as the races were over, they would go back and restore the track so the horses could train for the Big Race on Labor Day, or “Onion Days,” as the weekend was called.
Obviously, onions were grown in the area at one time, but when I was growing up it was all sugar beets and alfalfa. Some farms raised corn and peas, and there was a cannery in the neighboring town that was run by Del Monte. It ran full tilt in the summer.
There was also a hugh parade and a rodeo, but there were smaller rodeos in neighboring towns throughout the summer so there was always something to do.
If we got bored we would literally head for the hills and scramble around in the scrub oak and cactus.