There are
2,536 mi
from San Mateo, CA to Youngstown, OH
That's the driving distance. It would take 1 day 20 hours to go from San Mateo, California to Youngstown, Ohio.
The flight distance (direct flight from San Mateo, CA to Youngstown, OH) is 2,219.43 mi.
2,536 mi = 3.22 kms