Miles between Boulder, CO and Gillette, WY

There are
332 mi
from Boulder, CO to Gillette, WY

That's the driving distance. It would take 5 hours 55 mins to go from Boulder, Colorado to Gillette, Wyoming.

The flight distance (direct flight from Boulder, CO to Gillette, WY) is 295.69 mi.

332 mi = 534.93 kms