| Herndon to Storm Lake (Iowa) | 963.30 mi (1,550.28 km) |
| Herndon to Storrs (Connecticut) | 333.81 mi (537.21 km) |
| Herndon to Stoughton (Wisconsin) | 674.60 mi (1,085.66 km) |
| Herndon to Stow (Ohio) | 262.71 mi (422.80 km) |
| Herndon to Streamwood (Illinois) | 604.38 mi (972.66 km) |
| Herndon to Streator (Illinois) | 622.77 mi (1,002.25 km) |
| Herndon to Streetsboro (Ohio) | 261.42 mi (420.71 km) |
| Herndon to Strongsville (Ohio) | 285.10 mi (458.82 km) |
| Herndon to Stuart (Florida) | 830.02 mi (1,335.79 km) |
| Herndon to Stuarts Draft (Virginia) | 110.75 mi (178.24 km) |
| Herndon to Sturgis (Michigan) | 465.46 mi (749.08 km) |
| Herndon to Suamico (Wisconsin) | 674.30 mi (1,085.18 km) |
| Herndon to Sudley (Virginia) | 13.89 mi (22.35 km) |
| Herndon to Suffern (New York) | 226.68 mi (364.80 km) |
| Herndon to Suffolk (Virginia) | 162.36 mi (261.29 km) |
