There are
2,516 mi
from San Mateo, CA to Massillon, OH
That's the driving distance. It would take 1 day 19 hours to go from San Mateo, California to Massillon, Ohio.
The flight distance (direct flight from San Mateo, CA to Massillon, OH) is 2,177.10 mi.
2,516 mi = 3.22 kms