Miles between Thornton, CO and Rancho Cucamonga, CA

There are
983 mi
from Thornton, CO to Rancho Cucamonga, CA

That's the driving distance. It would take 17 hours 7 mins to go from Thornton, Colorado to Rancho Cucamonga, California.

The flight distance (direct flight from Thornton, CO to Rancho Cucamonga, CA) is 801.15 mi.

983 mi = 1,581.80 kms