Hardy Murphy Coliseum. 500 Lake Murray Dr S., Ardmore, OK 73401. Gather in the stands at Hardy Murphy Coliseum in Ardmore, and watch as classes of Appaloosa horses and riders compete for top rankings. At the All American Appaloosa Congress, see all ages of riders try their hand at winning best showmanship honors. From young weanling colts to two-year-old geldings, see which horses come out with the highest accomplishments. Across this three-day equestrian event, cheer on competitors in Western riding, saddleseat, reining, barrels and ranch classes, as well as newly added cattle classes. For more information call 540-840-1960.