There are
2,703 mi
from Oceanside, CA to Phoenixville, PA
That's the driving distance. It would take 2 days to go from Oceanside, California to Phoenixville, Pennsylvania.
The flight distance (direct flight from Oceanside, CA to Phoenixville, PA) is 2,346.87 mi.
2,703 mi = 4,349.53 kms