Miles between Greeley, CO and Johnston, IA

There are
644 mi
from Greeley, CO to Johnston, IA

That's the driving distance. It would take 11 hours 30 mins to go from Greeley, Colorado to Johnston, Iowa.

The flight distance (direct flight from Greeley, CO to Johnston, IA) is 579.39 mi.

644 mi = 1,037.11 kms