Miles between Boulder, CO and Rockville, MD

There are
1,682 mi
from Boulder, CO to Rockville, MD

That's the driving distance. It would take 1 day 6 hours to go from Boulder, Colorado to Rockville, Maryland.

The flight distance (direct flight from Boulder, CO to Rockville, MD) is 1,493.19 mi.

1,682 mi = 2,707.15 kms