27 vintage photos that show the glamorous, 143-year history of the Kentucky Derby

Since the races were first run in 1875, the Kentucky Derby has been drawing thousands of celebrities, politicians, and Louisville locals to the horse track at Churchill Downs.

Started by Louisville Jockey Club founder Meriwether Lewis Clark Jr., the sporting event has a long history tied to horse racing, mint juleps, and, of course, the famous Kentucky Derby hat.

As you prepare to watch the 143rd iteration of the big event Saturday, see an overview of the Derby's history in photos.