Miles between Boulder, CO and Flagstaff, AZ

There are
689 mi
from Boulder, CO to Flagstaff, AZ

That's the driving distance. It would take 13 hours 21 mins to go from Boulder, Colorado to Flagstaff, Arizona.

The flight distance (direct flight from Boulder, CO to Flagstaff, AZ) is 481.52 mi.

689 mi = 1,108.18 kms