Miles between Alameda, CA and Thornton, CO

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

That's the driving distance. It would take 21 hours 19 mins to go from Alameda, California to Thornton, Colorado.

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

1,243 mi = 1.61 kms