Miles between Parma, OH and Thornton, CO

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

That's the driving distance. It would take 23 hours 35 mins to go from Parma, Ohio to Thornton, Colorado.

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

1,321 mi = 1.61 kms