There are
798 mi
from Downey, CA to Sunland Park, NM
That's the driving distance. It would take 14 hours 2 mins to go from Downey, California to Sunland Park, New Mexico.
The flight distance (direct flight from Downey, CA to Sunland Park, NM) is 686.20 mi.
798 mi = 1,283.82 kms