Miles between Longmont, CO and Grand Forks, ND

There are
959 mi
from Longmont, CO to Grand Forks, ND

That's the driving distance. It would take 16 hours 36 mins to go from Longmont, Colorado to Grand Forks, North Dakota.

The flight distance (direct flight from Longmont, CO to Grand Forks, ND) is 668.47 mi.

959 mi = 1,543.63 kms