| Martinsburg to Odessa (Texas) | 1,458.86 mi (2,347.81 km) |
| Martinsburg to Ogden (Utah) | 1,782.77 mi (2,869.08 km) |
| Martinsburg to Oildale (California) | 2,249.67 mi (3,620.50 km) |
| Martinsburg to Ojus (Florida) | 941.40 mi (1,515.03 km) |
| Martinsburg to Okemos (Michigan) | 403.17 mi (648.84 km) |
| Martinsburg to Oklahoma City (Oklahoma) | 1,103.86 mi (1,776.49 km) |
| Martinsburg to Okmulgee (Oklahoma) | 1,020.93 mi (1,643.04 km) |
| Martinsburg to Olathe (Kansas) | 901.74 mi (1,451.21 km) |
| Martinsburg to Old Jamestown (Missouri) | 660.31 mi (1,062.67 km) |
| Martinsburg to Oldsmar (Florida) | 832.66 mi (1,340.04 km) |
| Martinsburg to Olean (New York) | 182.83 mi (294.24 km) |
| Martinsburg to Olive Branch (Mississippi) | 722.49 mi (1,162.73 km) |
| Martinsburg to Olivehurst (California) | 2,307.98 mi (3,714.33 km) |
| Martinsburg to Olney (Maryland) | 53.02 mi (85.32 km) |
| Martinsburg to Olympia (Washington) | 2,287.29 mi (3,681.03 km) |
