There are
2,791 mi
from Sunnyvale, CA to Martinsburg, WV
That's the driving distance. It would take 2 days to go from Sunnyvale, California to Martinsburg, West Virginia.
The flight distance (direct flight from Sunnyvale, CA to Martinsburg, WV) is 2,366.53 mi.
2,791 mi = 3.22 kms