Miles between Boulder, CO and Alpena, MI

There are
1,428 mi
from Boulder, CO to Alpena, MI

That's the driving distance. It would take 1 day 1 hour to go from Boulder, Colorado to Alpena, Michigan.

The flight distance (direct flight from Boulder, CO to Alpena, MI) is 1,161.01 mi.

1,428 mi = 1.61 kms