There are
165 mi
from Elgin, IL to Oshkosh, WI
That's the driving distance. It would take 3 hours 30 mins to go from Elgin, Illinois to Oshkosh, Wisconsin.
The flight distance (direct flight from Elgin, IL to Oshkosh, WI) is 137.95 mi.
165 mi = 265.72 kms