Miles between Boulder, CO and Dayton, OH

There are
1,215 mi
from Boulder, CO to Dayton, OH

That's the driving distance. It would take 21 hours 53 mins to go from Boulder, Colorado to Dayton, Ohio.

The flight distance (direct flight from Boulder, CO to Dayton, OH) is 1,115.07 mi.

1,215 mi = 1.61 kms