Miles between Boulder, CO and Hays, KS

There are
358 mi
from Boulder, CO to Hays, KS

That's the driving distance. It would take 6 hours 10 mins to go from Boulder, Colorado to Hays, Kansas.

The flight distance (direct flight from Boulder, CO to Hays, KS) is 326.64 mi.

358 mi = 576.69 kms