Miles between Thornton, CO and Lake Forest, CA

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

That's the driving distance. It would take 17 hours 58 mins to go from Thornton, Colorado to Lake Forest, California.

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

1,024 mi = 1.61 kms