There are
2,163 mi
from Oshkosh, WI to San Ramon, CA
That's the driving distance. It would take 1 day 13 hours to go from Oshkosh, Wisconsin to San Ramon, California.
The flight distance (direct flight from Oshkosh, WI to San Ramon, CA) is 1,785.36 mi.
2,163 mi = 3,481.76 kms