Miles between Thornton, CO and Parma, OH

There are
1,321 mi
from Thornton, CO to Parma, OH

That's the driving distance. It would take 23 hours 37 mins to go from Thornton, Colorado to Parma, Ohio.

The flight distance (direct flight from Thornton, CO to Parma, OH) is 1,219.93 mi.

1,321 mi = 1.61 kms