There are
1,416 mi
from Avondale, AZ to Johnston, IA
That's the driving distance. It would take 1 day 2 hours to go from Avondale, Arizona to Johnston, Iowa.
The flight distance (direct flight from Avondale, AZ to Johnston, IA) is 1,165.48 mi.
1,416 mi = 1.61 kms