There are
2,590 mi
from Hagerstown, MD to Poway, CA
That's the driving distance. It would take 1 day 22 hours to go from Hagerstown, Maryland to Poway, California.
The flight distance (direct flight from Hagerstown, MD to Poway, CA) is 2,218.95 mi.
2,590 mi = 4,167.61 kms