Miles between Thornton, CO and Montclair, CA

There are
991 mi
from Thornton, CO to Montclair, CA

That's the driving distance. It would take 17 hours 16 mins to go from Thornton, Colorado to Montclair, California.

The flight distance (direct flight from Thornton, CO to Montclair, CA) is 806.88 mi.

991 mi = 1,595.61 kms