There are
2,640 mi
from Escondido, CA to Martinsburg, WV
That's the driving distance. It would take 1 day 22 hours to go from Escondido, California to Martinsburg, West Virginia.
The flight distance (direct flight from Escondido, CA to Martinsburg, WV) is 2,204.55 mi.
2,640 mi = 4,249.24 kms