There are
2,183 mi
from Oshkosh, WI to Union City, CA
That's the driving distance. It would take 1 day 14 hours to go from Oshkosh, Wisconsin to Union City, California.
The flight distance (direct flight from Oshkosh, WI to Union City, CA) is 1,794.19 mi.
2,183 mi = 3,513.75 kms