Miles between Thornton, CO and Newton, IA

There are
699 mi
from Thornton, CO to Newton, IA

That's the driving distance. It would take 12 hours 8 mins to go from Thornton, Colorado to Newton, Iowa.

The flight distance (direct flight from Thornton, CO to Newton, IA) is 635.52 mi.

699 mi = 1,124.48 kms