There are
1,524 mi
from St Peters, MO to Buckeye, AZ
That's the driving distance. It would take 1 day 2 hours to go from St Peters, Missouri to Buckeye, Arizona.
The flight distance (direct flight from St Peters, MO to Buckeye, AZ) is 1,279.37 mi.
1,524 mi = 2,452.83 kms