Miles between Longmont, CO and St John, IN

There are
1,017 mi
from Longmont, CO to St John, IN

That's the driving distance. It would take 18 hours 17 mins to go from Longmont, Colorado to St John, Indiana.

The flight distance (direct flight from Longmont, CO to St John, IN) is 924.38 mi.

1,017 mi = 1.61 kms