| Potomac to Saddlebrooke (Arizona) | 1,927.96 mi (3,102.75 km) |
| Potomac to Safety Harbor (Florida) | 823.41 mi (1,325.16 km) |
| Potomac to Saginaw (Michigan) | 464.42 mi (747.42 km) |
| Potomac to Saginaw (Texas) | 1,202.49 mi (1,935.22 km) |
| Potomac to Sahuarita (Arizona) | 1,950.09 mi (3,138.37 km) |
| Potomac to Saks (Alabama) | 604.77 mi (973.29 km) |
| Potomac to Salem (Massachusetts) | 408.30 mi (657.10 km) |
| Potomac to Salem (Ohio) | 233.49 mi (375.77 km) |
| Potomac to Salem (Oregon) | 2,357.40 mi (3,793.86 km) |
| Potomac to Salem (Virginia) | 195.99 mi (315.41 km) |
| Potomac to Salem Lakes (Wisconsin) | 621.22 mi (999.75 km) |
| Potomac to Salida (California) | 2,356.25 mi (3,792.01 km) |
| Potomac to Salina (Kansas) | 1,095.57 mi (1,763.16 km) |
| Potomac to Salinas (California) | 2,405.56 mi (3,871.37 km) |
| Potomac to Salisbury (Maryland) | 97.28 mi (156.56 km) |
