Miles between Greeley, CO and Boone, IA

There are
665 mi
from Greeley, CO to Boone, IA

That's the driving distance. It would take 12 hours 3 mins to go from Greeley, Colorado to Boone, Iowa.

The flight distance (direct flight from Greeley, CO to Boone, IA) is 573.43 mi.

665 mi = 1,070.31 kms