There are
2,088 mi
from San Mateo, CA to Pekin, IL
That's the driving distance. It would take 1 day 11 hours to go from San Mateo, California to Pekin, Illinois.
The flight distance (direct flight from San Mateo, CA to Pekin, IL) is 1,755.54 mi.
2,088 mi = 3.22 kms