There are
742 mi
from Las Cruces, NM to Fullerton, CA
That's the driving distance. It would take 13 hours 9 mins to go from Las Cruces, New Mexico to Fullerton, California.
The flight distance (direct flight from Las Cruces, NM to Fullerton, CA) is 654.52 mi.
742 mi = 1,194.65 kms