Miles between Thornton, CO and Mill Valley, CA

There are
1,244 mi
from Thornton, CO to Mill Valley, CA

That's the driving distance. It would take 21 hours 25 mins to go from Thornton, Colorado to Mill Valley, California.

The flight distance (direct flight from Thornton, CO to Mill Valley, CA) is 953.18 mi.

1,244 mi = 1.61 kms