There are
2,443 mi
from Buena Park, CA to Greensburg, PA
That's the driving distance. It would take 1 day 19 hours to go from Buena Park, California to Greensburg, Pennsylvania.
The flight distance (direct flight from Buena Park, CA to Greensburg, PA) is 2,148.40 mi.
2,443 mi = 3,931.50 kms