Miles between Thornton, CO and Parsons, KS

There are
646 mi
from Thornton, CO to Parsons, KS

That's the driving distance. It would take 11 hours 22 mins to go from Thornton, Colorado to Parsons, Kansas.

The flight distance (direct flight from Thornton, CO to Parsons, KS) is 552.31 mi.

646 mi = 1,039.20 kms