Miles between Thornton, CO and Portage, IN

There are
1,020 mi
from Thornton, CO to Portage, IN

That's the driving distance. It would take 18 hours 9 mins to go from Thornton, Colorado to Portage, Indiana.

The flight distance (direct flight from Thornton, CO to Portage, IN) is 937.62 mi.

1,020 mi = 1.61 kms