Miles between Denver, CO and Alton, IL

There are
854 mi
from Denver, CO to Alton, IL

That's the driving distance. It would take 15 hours 11 mins to go from Denver, Colorado to Alton, Illinois.

The flight distance (direct flight from Denver, CO to Alton, IL) is 792.45 mi.

854 mi = 1,374.84 kms