There are
2,185 mi
from Oshkosh, WI to Windsor, CA
That's the driving distance. It would take 1 day 14 hours to go from Oshkosh, Wisconsin to Windsor, California.
The flight distance (direct flight from Oshkosh, WI to Windsor, CA) is 1,805.51 mi.
2,185 mi = 3,516.65 kms