Buffalo Roundup and Arts Festival Annual Custer State Park Buffalo Roundup – September 27, 2024 Watch cowboys and cowgirls as they roundup and drive the herd of approximately 1,300 buffalo. Not only is the roundup a spectacular sight to see, it is also a critical management tool in maintaining a strong and healthy herd.   The Buffalo Roundup will begin at 9:30 a.m. MT on September 27, with the parking lots opening at 6:15 a.m. Be sure to arrive early…