There are
2,005 mi
from Rancho Cucamonga, CA to Portland, TN
That's the driving distance. It would take 1 day 10 hours to go from Rancho Cucamonga, California to Portland, Tennessee.
The flight distance (direct flight from Rancho Cucamonga, CA to Portland, TN) is 1,752.15 mi.
2,005 mi = 3.22 kms