There are
2,489 mi
from Downey, CA to Jamestown, NY
That's the driving distance. It would take 1 day 20 hours to go from Downey, California to Jamestown, New York.
The flight distance (direct flight from Downey, CA to Jamestown, NY) is 2,170.77 mi.
2,489 mi = 3.22 kms