Sd Buffalo Roundup 2025 Date. Watch cowboys and cowgirls as they roundup and drive the herd of approximately 1,300. The buffalo are tested, branded, and sorted to either remain in the park or be auctioned off to another herd, according to custer state park officials.

The buffalo are tested, branded, and sorted to either remain in the park or be auctioned off to another herd, according to custer state park officials. The roundup — friday, september 27, 2025, is the day to mark in your calendar.