There are
1,985 mi
from San Marcos, CA to La Crosse, WI
That's the driving distance. It would take 1 day 10 hours to go from San Marcos, California to La Crosse, Wisconsin.
The flight distance (direct flight from San Marcos, CA to La Crosse, WI) is 1,574.67 mi.
1,985 mi = 1.61 kms