There are
2,124 mi
from Fairfield, CA to Oshkosh, WI
That's the driving distance. It would take 1 day 13 hours to go from Fairfield, California to Oshkosh, Wisconsin.
The flight distance (direct flight from Fairfield, CA to Oshkosh, WI) is 1,775.15 mi.
2,124 mi = 3.22 kms