There are
1,479 mi
from Longmont, CO to Dunkirk, NY
That's the driving distance. It would take 1 day 2 hours to go from Longmont, Colorado to Dunkirk, New York.
The flight distance (direct flight from Longmont, CO to Dunkirk, NY) is 1,341.36 mi.
1,479 mi = 1.61 kms