There are
1,380 mi
from Amarillo, TX to Larkspur, CA
That's the driving distance. It would take 1 day to go from Amarillo, Texas to Larkspur, California.
The flight distance (direct flight from Amarillo, TX to Larkspur, CA) is 1,161.46 mi.
1,380 mi = 2,221.52 kms