There are
1,046 mi
from Amarillo, TX to Menifee, CA
That's the driving distance. It would take 18 hours 14 mins to go from Amarillo, Texas to Menifee, California.
The flight distance (direct flight from Amarillo, TX to Menifee, CA) is 879.37 mi.
1,046 mi = 1,682.61 kms