Miles between Thornton, CO and Marion, OH

There are
1,271 mi
from Thornton, CO to Marion, OH

That's the driving distance. It would take 23 hours 13 mins to go from Thornton, Colorado to Marion, Ohio.

The flight distance (direct flight from Thornton, CO to Marion, OH) is 1,150.39 mi.

1,271 mi = 1.61 kms