Miles between Thornton, CO and Portsmouth, OH

There are
1,294 mi
from Thornton, CO to Portsmouth, OH

That's the driving distance. It would take 23 hours 36 mins to go from Thornton, Colorado to Portsmouth, Ohio.

The flight distance (direct flight from Thornton, CO to Portsmouth, OH) is 1,174.56 mi.

1,294 mi = 1.61 kms