Miles between Richardson, TX and Longmont, CO

There are
810 mi
from Richardson, TX to Longmont, CO

That's the driving distance. It would take 14 hours 56 mins to go from Richardson, Texas to Longmont, Colorado.

The flight distance (direct flight from Richardson, TX to Longmont, CO) is 681.03 mi.

810 mi = 1,302.78 kms