Miles between Dayton, OH and Longmont, CO

There are
1,222 mi
from Dayton, OH to Longmont, CO

That's the driving distance. It would take 21 hours 57 mins to go from Dayton, Ohio to Longmont, Colorado.

The flight distance (direct flight from Dayton, OH to Longmont, CO) is 1,105.16 mi.

1,222 mi = 1.61 kms