Miles between Boulder, CO and Romulus, MI

There are
1,264 mi
from Boulder, CO to Romulus, MI

That's the driving distance. It would take 22 hours 27 mins to go from Boulder, Colorado to Romulus, Michigan.

The flight distance (direct flight from Boulder, CO to Romulus, MI) is 1,145.55 mi.

1,264 mi = 1.61 kms