 Bigger and better than ever, July 31st till August 3rd with a free family kickoff event Wednesday night at Sandy Downs. Gates open at 4.30 with pre-rodeo events including youth rodeo, free kids games, food and vendors. So come early for the best seats and enjoy the food, vendors and fun. Idaho's oldest rodeo, the War Bonnet Roundup, July 31st to August 3rd at Sandy Downs.