There are
1,060 mi
from Charleston, SC to Oshkosh, WI
That's the driving distance. It would take 20 hours 25 mins to go from Charleston, South Carolina to Oshkosh, Wisconsin.
The flight distance (direct flight from Charleston, SC to Oshkosh, WI) is 905.12 mi.
1,060 mi = 1.61 kms