Miles between St Louis, MO and Dekalb, IL

There are
280 mi
from St Louis, MO to Dekalb, IL

That's the driving distance. It would take 5 hours 9 mins to go from St Louis, Missouri to Dekalb, Illinois.

The flight distance (direct flight from St Louis, MO to Dekalb, IL) is 240.61 mi.

280 mi = 450.25 kms