There are
2,059 mi
from Dekalb, IL to Pittsburg, CA
That's the driving distance. It would take 1 day 11 hours to go from Dekalb, Illinois to Pittsburg, California.
The flight distance (direct flight from Dekalb, IL to Pittsburg, CA) is 1,763.70 mi.
2,059 mi = 3,313.05 kms