There are
2,106 mi
from San Marcos, CA to Wausau, WI
That's the driving distance. It would take 1 day 13 hours to go from San Marcos, California to Wausau, Wisconsin.
The flight distance (direct flight from San Marcos, CA to Wausau, WI) is 1,676.16 mi.
2,106 mi = 3.22 kms