There are
1,460 mi
from St Petersburg, FL to Wausau, WI
That's the driving distance. It would take 1 day 3 hours to go from St Petersburg, Florida to Wausau, Wisconsin.
The flight distance (direct flight from St Petersburg, FL to Wausau, WI) is 1,248.28 mi.
1,460 mi = 1.61 kms