Miles between Decatur, IL and Boise, ID

There are
1,647 mi
from Decatur, IL to Boise, ID

That's the driving distance. It would take 1 day 4 hours to go from Decatur, Illinois to Boise, Idaho.

The flight distance (direct flight from Decatur, IL to Boise, ID) is 1,424.13 mi.

1,647 mi = 1.61 kms