Miles between Boulder, CO and Marlborough, MA

There are
1,972 mi
from Boulder, CO to Marlborough, MA

That's the driving distance. It would take 1 day 11 hours to go from Boulder, Colorado to Marlborough, Massachusetts.

The flight distance (direct flight from Boulder, CO to Marlborough, MA) is 1,749.31 mi.

1,972 mi = 1.61 kms