There are
1,950 mi
from Pittsburg, CA to Quincy, IL
That's the driving distance. It would take 1 day 9 hours to go from Pittsburg, California to Quincy, Illinois.
The flight distance (direct flight from Pittsburg, CA to Quincy, IL) is 1,634.14 mi.
1,950 mi = 3,138.29 kms