There are
2,787 mi
from Half Moon Bay, CA to Martinsburg, WV
That's the driving distance. It would take 2 days to go from Half Moon Bay, California to Martinsburg, West Virginia.
The flight distance (direct flight from Half Moon Bay, CA to Martinsburg, WV) is 2,385.15 mi.
2,787 mi = 4,484.91 kms