Drive the Wildlife Loop Road of Custer State Park, in the Black Hills of South Dakota, and wait as a herd of 1,300 to 1,500 bison crosses the asphalt at its own pace. Each year in late September, riders on horseback drive the herd across the prairie during the Buffalo Roundup, which the public can watch from viewing areas. Next door, Wind Cave National Park keeps a smaller herd on open mixed-grass prairie.
Up to 95% sighting chance in Custer State Park and Wind Cave National Park, South Dakota, USA. Best months: June, July, August.
It takes place each year in late September. Arrive early, as the viewing areas fill up well before the herd comes through.
Most often along the 18-mile Wildlife Loop Road in the south of the park, where they share the grassland with pronghorn and the park's wild burros.
Yes. It borders Custer to the south, and its bison graze beside prairie dog towns along the park roads.
