There are
2,072 mi
from Simi Valley, CA to Oshkosh, WI
That's the driving distance. It would take 1 day 13 hours to go from Simi Valley, California to Oshkosh, Wisconsin.
The flight distance (direct flight from Simi Valley, CA to Oshkosh, WI) is 1,742.42 mi.
2,072 mi = 3.22 kms