Miles between Longmont, CO and Alpine, UT

There are
520 mi
from Longmont, CO to Alpine, UT

That's the driving distance. It would take 9 hours 1 min to go from Longmont, Colorado to Alpine, Utah.

The flight distance (direct flight from Longmont, CO to Alpine, UT) is 352.21 mi.

520 mi = 837.53 kms