Miles between Lake Forest, CA and Thornton, CO

There are
1,024 mi
from Lake Forest, CA to Thornton, CO

That's the driving distance. It would take 18 hours 1 min to go from Lake Forest, California to Thornton, Colorado.

The flight distance (direct flight from Lake Forest, CA to Thornton, CO) is 823.58 mi.

1,024 mi = 1.61 kms