Miles between Boulder, CO and Middletown, DE

There are
1,753 mi
from Boulder, CO to Middletown, DE

That's the driving distance. It would take 1 day 8 hours to go from Boulder, Colorado to Middletown, Delaware.

The flight distance (direct flight from Boulder, CO to Middletown, DE) is 1,563.65 mi.

1,753 mi = 1.61 kms