There are
2,816 mi
from Union, NJ to Oroville, CA
That's the driving distance. It would take 2 days 1 hour to go from Union, New Jersey to Oroville, California.
The flight distance (direct flight from Union, NJ to Oroville, CA) is 2,469.94 mi.
2,816 mi = 4,532.06 kms