There are
1,412 mi
from Richardson, TX to Rancho Cucamonga, CA
That's the driving distance. It would take 1 day to go from Richardson, Texas to Rancho Cucamonga, California.
The flight distance (direct flight from Richardson, TX to Rancho Cucamonga, CA) is 1,202.26 mi.
1,412 mi = 1.61 kms