Miles between Dubuque, IA and Alton, IL

There are
285 mi
from Dubuque, IA to Alton, IL

That's the driving distance. It would take 6 hours 1 min to go from Dubuque, Iowa to Alton, Illinois.

The flight distance (direct flight from Dubuque, IA to Alton, IL) is 250.69 mi.

285 mi = 458.76 kms