Miles between Boulder, CO and Buffalo Grove, IL

There are
1,023 mi
from Boulder, CO to Buffalo Grove, IL

That's the driving distance. It would take 18 hours 9 mins to go from Boulder, Colorado to Buffalo Grove, Illinois.

The flight distance (direct flight from Boulder, CO to Buffalo Grove, IL) is 911.82 mi.

1,023 mi = 1,646.32 kms