| Martinsburg to Silver Firs (Washington) | 2,249.91 mi (3,620.89 km) |
| Martinsburg to Silver Spring (Maryland) | 60.11 mi (96.73 km) |
| Martinsburg to Silver Springs Shores (Florida) | 750.82 mi (1,208.32 km) |
| Martinsburg to Silverdale (Washington) | 2,275.14 mi (3,661.48 km) |
| Martinsburg to Silverton (Oregon) | 2,294.01 mi (3,691.86 km) |
| Martinsburg to Simi Valley (California) | 2,262.73 mi (3,641.51 km) |
| Martinsburg to Simpsonville (South Carolina) | 402.88 mi (648.37 km) |
| Martinsburg to Sioux City (Iowa) | 981.02 mi (1,578.80 km) |
| Martinsburg to Sioux Falls (South Dakota) | 1,008.11 mi (1,622.40 km) |
| Martinsburg to Skokie (Illinois) | 540.78 mi (870.30 km) |
| Martinsburg to Sleepy Hollow (New York) | 244.10 mi (392.84 km) |
| Martinsburg to Slidell (Louisiana) | 919.96 mi (1,480.53 km) |
| Martinsburg to Smithfield (North Carolina) | 273.33 mi (439.88 km) |
| Martinsburg to Smithfield (Utah) | 1,770.56 mi (2,849.45 km) |
| Martinsburg to Smithville (Missouri) | 884.57 mi (1,423.58 km) |
