Miles between Thornton, CO and St Peters, MO

There are
826 mi
from Thornton, CO to St Peters, MO

That's the driving distance. It would take 14 hours 32 mins to go from Thornton, Colorado to St Peters, Missouri.

The flight distance (direct flight from Thornton, CO to St Peters, MO) is 770.73 mi.

826 mi = 1,329.54 kms