There are
2,044 mi
from Fullerton, CA to Oshkosh, WI
That's the driving distance. It would take 1 day 12 hours to go from Fullerton, California to Oshkosh, Wisconsin.
The flight distance (direct flight from Fullerton, CA to Oshkosh, WI) is 1,715.77 mi.
2,044 mi = 3.22 kms