There are
2,400 mi
from Lakeland, FL to Rexburg, ID
That's the driving distance. It would take 1 day 19 hours to go from Lakeland, Florida to Rexburg, Idaho.
The flight distance (direct flight from Lakeland, FL to Rexburg, ID) is 1,976.80 mi.
2,400 mi = 3.22 kms