There are
1,091 mi
from Amarillo, TX to Simi Valley, CA
That's the driving distance. It would take 19 hours 5 mins to go from Amarillo, Texas to Simi Valley, California.
The flight distance (direct flight from Amarillo, TX to Simi Valley, CA) is 963.38 mi.
1,091 mi = 1,755.42 kms