Miles between Thornton, CO and Monrovia, CA

There are
1,007 mi
from Thornton, CO to Monrovia, CA

That's the driving distance. It would take 17 hours 35 mins to go from Thornton, Colorado to Monrovia, California.

The flight distance (direct flight from Thornton, CO to Monrovia, CA) is 819.33 mi.

1,007 mi = 1.61 kms