There are
2,657 mi
from Pittsburg, CA to Irmo, SC
That's the driving distance. It would take 1 day 22 hours to go from Pittsburg, California to Irmo, South Carolina.
The flight distance (direct flight from Pittsburg, CA to Irmo, SC) is 2,271.62 mi.
2,657 mi = 4,275.81 kms