There are
1,423 mi
from Sanford, FL to Onalaska, WI
That's the driving distance. It would take 1 day 2 hours to go from Sanford, Florida to Onalaska, Wisconsin.
The flight distance (direct flight from Sanford, FL to Onalaska, WI) is 1,180.46 mi.
1,423 mi = 2,289.54 kms