There are
2,444 mi
from Rialto, CA to Johnstown, PA
That's the driving distance. It would take 1 day 20 hours to go from Rialto, California to Johnstown, Pennsylvania.
The flight distance (direct flight from Rialto, CA to Johnstown, PA) is 2,141.31 mi.
2,444 mi = 3.22 kms