There are
2,153 mi
from Walnut Creek, CA to Oshkosh, WI
That's the driving distance. It would take 1 day 13 hours to go from Walnut Creek, California to Oshkosh, Wisconsin.
The flight distance (direct flight from Walnut Creek, CA to Oshkosh, WI) is 1,786.06 mi.
2,153 mi = 3,465.30 kms