There are
2,172 mi
from San Mateo, CA to Portage, IN
That's the driving distance. It would take 1 day 13 hours to go from San Mateo, California to Portage, Indiana.
The flight distance (direct flight from San Mateo, CA to Portage, IN) is 1,879.34 mi.
2,172 mi = 3.22 kms