Over 1,500 miles of snowmobile trails exist in South Dakota and whether you have the need to cross the open prairie east of the Missouri River or lose yourself in the 1 million acres of ponderosa pine in the Black Hills. This is only a 5-Day temporary permit. It allows snowmobilers that aren't validly licensed in their home state to legally ride the trails in South Dakota. Resident snowmobilers may also purchase if they aren't validly licensed (most likely due to the fact they don't have a title