There are
2,238 mi
from Oshkosh, WI to Greenfield, CA
That's the driving distance. It would take 1 day 16 hours to go from Oshkosh, Wisconsin to Greenfield, California.
The flight distance (direct flight from Oshkosh, WI to Greenfield, CA) is 1,793.23 mi.
2,238 mi = 3,601.12 kms