Miles between Longmont, CO and Gillette, WY

There are
318 mi
from Longmont, CO to Gillette, WY

That's the driving distance. It would take 5 hours 35 mins to go from Longmont, Colorado to Gillette, Wyoming.

The flight distance (direct flight from Longmont, CO to Gillette, WY) is 285.67 mi.

318 mi = 511.79 kms