Miles between Thornton, CO and Fontana, CA

There are
978 mi
from Thornton, CO to Fontana, CA

That's the driving distance. It would take 17 hours 3 mins to go from Thornton, Colorado to Fontana, California.

The flight distance (direct flight from Thornton, CO to Fontana, CA) is 794.16 mi.

978 mi = 1,574.06 kms