Miles between Thornton, CO and Marion, AR

There are
1,091 mi
from Thornton, CO to Marion, AR

That's the driving distance. It would take 18 hours 36 mins to go from Thornton, Colorado to Marion, Arkansas.

The flight distance (direct flight from Thornton, CO to Marion, AR) is 869.64 mi.

1,091 mi = 1.61 kms