best roads for motorcycle

I don't ride a motorcycle so check my route suggestion below is suitable by using satellite & possibly streetview on https://www.googlemaps.com It certainly looks ok to me.
1. From Rapid City take the 79 (S) to Maverick Junction. Turn right (W) onto US-18.
2. Follow US-18 past Hot Springs (South Dakota) and Edgemont (South Dakota) to Mule Creek Junction. Take a left (S) onto US-85/US-18 CanAm Highway.
3. Follow US-85 to and through Torrington (Wyoming).
4. Continue following US-85 south to just north of Cheyenne. Turn left onto the I-25 (S) towards the city centre.