There are
2,608 mi
from Temecula, CA to Harrisburg, PA
That's the driving distance. It would take 1 day 22 hours to go from Temecula, California to Harrisburg, Pennsylvania.
The flight distance (direct flight from Temecula, CA to Harrisburg, PA) is 2,253.85 mi.
2,608 mi = 3.22 kms