There are
2,585 mi
from San Bernardino, CA to Martinsburg, WV
That's the driving distance. It would take 1 day 21 hours to go from San Bernardino, California to Martinsburg, West Virginia.
The flight distance (direct flight from San Bernardino, CA to Martinsburg, WV) is 2,189.73 mi.
2,585 mi = 4,160.03 kms