There are
2,310 mi
from Oshkosh, WI to Fortuna, CA
That's the driving distance. It would take 1 day 17 hours to go from Oshkosh, Wisconsin to Fortuna, California.
The flight distance (direct flight from Oshkosh, WI to Fortuna, CA) is 1,820.67 mi.
2,310 mi = 3,717.29 kms