There are
1,982 mi
from Rancho Cucamonga, CA to Duluth, MN
That's the driving distance. It would take 1 day 11 hours to go from Rancho Cucamonga, California to Duluth, Minnesota.
The flight distance (direct flight from Rancho Cucamonga, CA to Duluth, MN) is 1,590.07 mi.
1,982 mi = 1.61 kms