There are
279 mi
from Champaign, IL to Platteville, WI
That's the driving distance. It would take 5 hours 16 mins to go from Champaign, Illinois to Platteville, Wisconsin.
The flight distance (direct flight from Champaign, IL to Platteville, WI) is 214.74 mi.
279 mi = 448.75 kms