Miles between Longmont, CO and Bismarck, ND

There are
690 mi
from Longmont, CO to Bismarck, ND

That's the driving distance. It would take 12 hours 33 mins to go from Longmont, Colorado to Bismarck, North Dakota.

The flight distance (direct flight from Longmont, CO to Bismarck, ND) is 507.15 mi.

690 mi = 1,109.82 kms