There are
2,204 mi
from San Mateo, CA to Richfield, WI
That's the driving distance. It would take 1 day 14 hours to go from San Mateo, California to Richfield, Wisconsin.
The flight distance (direct flight from San Mateo, CA to Richfield, WI) is 1,824.82 mi.
2,204 mi = 3.22 kms