Miles between Boulder, CO and Ionia, MI

There are
1,212 mi
from Boulder, CO to Ionia, MI

That's the driving distance. It would take 21 hours 38 mins to go from Boulder, Colorado to Ionia, Michigan.

The flight distance (direct flight from Boulder, CO to Ionia, MI) is 1,062.53 mi.

1,212 mi = 1.61 kms