Miles between Boulder, CO and Danbury, CT

There are
1,837 mi
from Boulder, CO to Danbury, CT

That's the driving distance. It would take 1 day 9 hours to go from Boulder, Colorado to Danbury, Connecticut.

The flight distance (direct flight from Boulder, CO to Danbury, CT) is 1,659.87 mi.

1,837 mi = 1.61 kms