There are
630 mi
from Killeen, TX to Las Cruces, NM
That's the driving distance. It would take 10 hours 54 mins to go from Killeen, Texas to Las Cruces, New Mexico.
The flight distance (direct flight from Killeen, TX to Las Cruces, NM) is 537.38 mi.
630 mi = 1,014.06 kms