Miles between Thornton, CO and Alameda, CA

There are
1,243 mi
from Thornton, CO to Alameda, CA

That's the driving distance. It would take 21 hours 20 mins to go from Thornton, Colorado to Alameda, California.

The flight distance (direct flight from Thornton, CO to Alameda, CA) is 939.48 mi.

1,243 mi = 1.61 kms