Miles between Boulder, CO and Tucson, AZ

There are
921 mi
from Boulder, CO to Tucson, AZ

That's the driving distance. It would take 16 hours 19 mins to go from Boulder, Colorado to Tucson, Arizona.

The flight distance (direct flight from Boulder, CO to Tucson, AZ) is 623.81 mi.

921 mi = 1,482.91 kms