| Herndon to Saddlebrooke (Arizona) | 1,917.49 mi (3,085.90 km) |
| Herndon to Safety Harbor (Florida) | 816.44 mi (1,313.94 km) |
| Herndon to Saginaw (Michigan) | 459.05 mi (738.77 km) |
| Herndon to Saginaw (Texas) | 1,191.72 mi (1,917.89 km) |
| Herndon to Sahuarita (Arizona) | 1,939.57 mi (3,121.43 km) |
| Herndon to Saks (Alabama) | 594.55 mi (956.84 km) |
| Herndon to Salem (Massachusetts) | 418.32 mi (673.22 km) |
| Herndon to Salem (Ohio) | 226.95 mi (365.25 km) |
| Herndon to Salem (Oregon) | 2,349.34 mi (3,780.90 km) |
| Herndon to Salem (Virginia) | 185.91 mi (299.20 km) |
| Herndon to Salem Lakes (Wisconsin) | 613.37 mi (987.13 km) |
| Herndon to Salida (California) | 2,346.77 mi (3,776.77 km) |
| Herndon to Salina (Kansas) | 1,085.60 mi (1,747.11 km) |
| Herndon to Salinas (California) | 2,395.95 mi (3,855.91 km) |
| Herndon to Salisbury (Maryland) | 105.43 mi (169.67 km) |
