There are
2,892 mi
from San Mateo, CA to Yeadon, PA
That's the driving distance. It would take 2 days 2 hours to go from San Mateo, California to Yeadon, Pennsylvania.
The flight distance (direct flight from San Mateo, CA to Yeadon, PA) is 2,512.15 mi.
2,892 mi = 3.22 kms