Miles between Boulder, CO and Marshfield, WI

There are
1,039 mi
from Boulder, CO to Marshfield, WI

That's the driving distance. It would take 18 hours 58 mins to go from Boulder, Colorado to Marshfield, Wisconsin.

The flight distance (direct flight from Boulder, CO to Marshfield, WI) is 833.85 mi.

1,039 mi = 1.61 kms