There are
2,663 mi
from Mckeesport, PA to Watsonville, CA
That's the driving distance. It would take 1 day 22 hours to go from Mckeesport, Pennsylvania to Watsonville, California.
The flight distance (direct flight from Mckeesport, PA to Watsonville, CA) is 2,252.53 mi.
2,663 mi = 3.22 kms