There are
1,820 mi
from Kansas City, KS to San Mateo, CA
That's the driving distance. It would take 1 day 7 hours to go from Kansas City, Kansas to San Mateo, California.
The flight distance (direct flight from Kansas City, KS to San Mateo, CA) is 1,499.10 mi.
1,820 mi = 1.61 kms