Miles between San Mateo, CA and Decatur, IL

There are
2,103 mi
from San Mateo, CA to Decatur, IL

That's the driving distance. It would take 1 day 12 hours to go from San Mateo, California to Decatur, Illinois.

The flight distance (direct flight from San Mateo, CA to Decatur, IL) is 1,795.84 mi.

2,103 mi = 3.22 kms