There are
1,786 mi
from Longmont, CO to Schenectady, NY
That's the driving distance. It would take 1 day 8 hours to go from Longmont, Colorado to Schenectady, New York.
The flight distance (direct flight from Longmont, CO to Schenectady, NY) is 1,613.88 mi.
1,786 mi = 1.61 kms