There are
752 mi
from Las Cruces, NM to Fountain Valley, CA
That's the driving distance. It would take 13 hours 20 mins to go from Las Cruces, New Mexico to Fountain Valley, California.
The flight distance (direct flight from Las Cruces, NM to Fountain Valley, CA) is 655.04 mi.
752 mi = 1,209.50 kms