Miles between Boulder, CO and Portland, TN

There are
1,173 mi
from Boulder, CO to Portland, TN

That's the driving distance. It would take 21 hours 6 mins to go from Boulder, Colorado to Portland, Tennessee.

The flight distance (direct flight from Boulder, CO to Portland, TN) is 1,042.12 mi.

1,173 mi = 1.61 kms