Come to the Super 8 and use the amenities of the 2 nearby YMCA facilities. There is one workout facility 3 buildings away. The main YMCA with the swimming pool, workout equipment, basketball court, and indoor track is about a half mile away. Pay $5 to get into either one of them. This is a discount of 50% off their normal guest pass.
Call the Spirit Lake Super 8 at 712-336-4901 to check availability and reserve.