There are
2,017 mi
from Oswego, IL to Oceanside, CA
That's the driving distance. It would take 1 day 11 hours to go from Oswego, Illinois to Oceanside, California.
The flight distance (direct flight from Oswego, IL to Oceanside, CA) is 1,687.19 mi.
2,017 mi = 3,246.49 kms