Miles between San Mateo, CA and Johnston, IA

There are
1,818 mi
from San Mateo, CA to Johnston, IA

That's the driving distance. It would take 1 day 7 hours to go from San Mateo, California to Johnston, Iowa.

The flight distance (direct flight from San Mateo, CA to Johnston, IA) is 1,542.11 mi.

1,818 mi = 1.61 kms