There are
2,137 mi
from La Mesa, CA to Wausau, WI
That's the driving distance. It would take 1 day 13 hours to go from La Mesa, California to Wausau, Wisconsin.
The flight distance (direct flight from La Mesa, CA to Wausau, WI) is 1,685.42 mi.
2,137 mi = 3,438.71 kms