There are
140 mi
from Mt Prospect, IL to Waunakee, WI
That's the driving distance. It would take 2 hours 41 mins to go from Mt Prospect, Illinois to Waunakee, Wisconsin.
The flight distance (direct flight from Mt Prospect, IL to Waunakee, WI) is 109.57 mi.
140 mi = 225.50 kms