Miles between Thornton, CO and Niagara Falls, NY

There are
1,509 mi
from Thornton, CO to Niagara Falls, NY

That's the driving distance. It would take 1 day 3 hours to go from Thornton, Colorado to Niagara Falls, New York.

The flight distance (direct flight from Thornton, CO to Niagara Falls, NY) is 1,355.22 mi.

1,509 mi = 1.61 kms