Miles between Boulder, CO and St Peters, MO

There are
844 mi
from Boulder, CO to St Peters, MO

That's the driving distance. It would take 14 hours 51 mins to go from Boulder, Colorado to St Peters, Missouri.

The flight distance (direct flight from Boulder, CO to St Peters, MO) is 786.79 mi.

844 mi = 1,357.53 kms