There are
1,299 mi
from Longmont, CO to Chillicothe, OH
That's the driving distance. It would take 23 hours 27 mins to go from Longmont, Colorado to Chillicothe, Ohio.
The flight distance (direct flight from Longmont, CO to Chillicothe, OH) is 1,173.41 mi.
1,299 mi = 2,090.89 kms