Miles between Thornton, CO and Longmont, CO

There are
28 mi
from Thornton, CO to Longmont, CO

That's the driving distance. It would take 35 minutes to go from Thornton, Colorado to Longmont, Colorado.

The flight distance (direct flight from Thornton, CO to Longmont, CO) is 21.79 mi.

28 mi = 45.22 kms