Miles between Boulder, CO and Richmond, KY

There are
1,227 mi
from Boulder, CO to Richmond, KY

That's the driving distance. It would take 21 hours 58 mins to go from Boulder, Colorado to Richmond, Kentucky.

The flight distance (direct flight from Boulder, CO to Richmond, KY) is 1,136.35 mi.

1,227 mi = 1.61 kms