There are
2,569 mi
from Rialto, CA to Harrisburg, PA
That's the driving distance. It would take 1 day 22 hours to go from Rialto, California to Harrisburg, Pennsylvania.
The flight distance (direct flight from Rialto, CA to Harrisburg, PA) is 2,248.74 mi.
2,569 mi = 3.22 kms