Distance Between Detroit and Harper = Miles
Calculated driving distance between Detroit, Michigan and Harper, Iowa is miles, this equals kilometres. Estimated driving time is in current traffic conditions. With an average car, this trip would cost around $ in gasoline, since you would need about gallons of fuel.(Based on current US Gas prices and average mileage of 3.6 gallons gas per mile).
Leaving from Detroit, Michigan located in Michigan - United States you would reach Harper, Iowa (Iowa - United States) in about driving an average speed of miles per hour to cover the miles, assuming traffic conditions stay unchanged and you don't take any breaks.
The map overview below shows the best driving route from Detroit, Michigan to Harper, Iowa as a blue line on the map, with starting point (Detroit) marked A, and destination point (Harper) marked B. You can zoom in on the map to view road numbers, street names and other details both in Detroit, Michigan and Harper, Iowa as well as every other town near or on your route.