Miles between Thornton, CO and St John, IN

There are
1,012 mi
from Thornton, CO to St John, IN

That's the driving distance. It would take 18 hours 1 min to go from Thornton, Colorado to St John, Indiana.

The flight distance (direct flight from Thornton, CO to St John, IN) is 921.89 mi.

1,012 mi = 1.61 kms