Dunn County, ND Events Event Categories Festivals Rodeos Trail Rides Dunn County Event OutlookJune 13, 2024 Annual Killdeer Mountain Roundup Rodeo - KilldeerJuly 27, 2024 Killdeer Lewis and Clark Event - KilldeerAugust 10, 2024 Annual Badlands Trail Ride - Killdeer View our full calendar of events