There are
2,294 mi
from San Mateo, CA to Greenfield, IN
That's the driving distance. It would take 1 day 16 hours to go from San Mateo, California to Greenfield, Indiana.
The flight distance (direct flight from San Mateo, CA to Greenfield, IN) is 1,964.22 mi.
2,294 mi = 3.22 kms