The cattle drive used to be the traditional unofficial start to Cheyenne Frontier Days and took place during the morning of the Sunday before the official start. Unfortunately, due to safety considerations, this event, which I personally found fun to watch, has been discontinued. I'm glad I have pictures of it.
There are a gazillion - okay, that might be an exaggeration, but there are a lot of things to do at CFD, starting with the cattle drive.
Other rodeos might bring their cattle in by truck, but it's a CFD tradition to drive them in the old-fashioned way ... at least for the last few miles. You can see them here on the city street next to Interstate 25.
I found it amusing that there were far more cattle on the street than there were cars on the highway.