Miles between Thornton, CO and Downey, CA

There are
1,023 mi
from Thornton, CO to Downey, CA

That's the driving distance. It would take 17 hours 53 mins to go from Thornton, Colorado to Downey, California.

The flight distance (direct flight from Thornton, CO to Downey, CA) is 833.30 mi.

1,023 mi = 1.61 kms