There are
2,190 mi
from Oshkosh, WI to Arroyo Grande, CA
That's the driving distance. It would take 1 day 15 hours to go from Oshkosh, Wisconsin to Arroyo Grande, California.
The flight distance (direct flight from Oshkosh, WI to Arroyo Grande, CA) is 1,800.80 mi.
2,190 mi = 3,524.10 kms