| Martinsburg to Smyrna (Delaware) | 127.05 mi (204.47 km) |
| Martinsburg to Smyrna (Georgia) | 529.59 mi (852.30 km) |
| Martinsburg to Smyrna (Tennessee) | 525.48 mi (845.67 km) |
| Martinsburg to Snellville (Georgia) | 510.99 mi (822.36 km) |
| Martinsburg to Snoqualmie (Washington) | 2,236.31 mi (3,598.99 km) |
| Martinsburg to Snyder (Texas) | 1,358.10 mi (2,185.65 km) |
| Martinsburg to Socastee (South Carolina) | 402.82 mi (648.27 km) |
| Martinsburg to Socorro (Texas) | 1,671.01 mi (2,689.22 km) |
| Martinsburg to Soddy-Daisy (Tennessee) | 490.09 mi (788.72 km) |
| Martinsburg to Solana Beach (California) | 2,216.32 mi (3,566.82 km) |
| Martinsburg to Soledad (California) | 2,349.08 mi (3,780.47 km) |
| Martinsburg to Solon (Ohio) | 225.62 mi (363.10 km) |
| Martinsburg to Somers Point (New Jersey) | 180.27 mi (290.11 km) |
| Martinsburg to Somerset (Kentucky) | 395.33 mi (636.22 km) |
| Martinsburg to Somerset (New Jersey) | 197.82 mi (318.36 km) |
