September ultramarathons in South Dakota, United States

Repeated 1.5-mile farm loop on flat dirt and pasture, surrounded by miniature animals, with variable trail conditions and on-site camping options.

4.1666-mile trail loop with 385 feet of climbing per lap in the Black Hills, building a last-athlete-standing ultra one circuit at a time.

Scenic march and marathon on the Mickelson Trail through Black Hills National Forest, following a Rochford to Deadwood route with commemorative focus