Miles between Dumas, TX and Longmont, CO

There are
401 mi
from Dumas, TX to Longmont, CO

That's the driving distance. It would take 7 hours 36 mins to go from Dumas, Texas to Longmont, Colorado.

The flight distance (direct flight from Dumas, TX to Longmont, CO) is 342.50 mi.

401 mi = 645.28 kms