There are
1,605 mi
from Longmont, CO to Canandaigua, NY
That's the driving distance. It would take 1 day 5 hours to go from Longmont, Colorado to Canandaigua, New York.
The flight distance (direct flight from Longmont, CO to Canandaigua, NY) is 1,444.57 mi.
1,605 mi = 1.61 kms