| Niles to Sesimbra | 4,006.33 mi (6,447.57 km) |
| Niles to Setubal | 4,013.10 mi (6,458.46 km) |
| Niles to Sever do Vouga | 3,960.21 mi (6,373.34 km) |
| Niles to Silves | 4,082.20 mi (6,569.66 km) |
| Niles to Sines | 4,034.66 mi (6,493.17 km) |
| Niles to Sintra | 3,980.41 mi (6,405.85 km) |
| Niles to Sobrado de Paiva | 3,954.46 mi (6,364.08 km) |
| Niles to Sobral de Monte Agraco | 3,983.69 mi (6,411.14 km) |
| Niles to Soure | 3,971.62 mi (6,391.71 km) |
| Niles to Tabua | 3,988.44 mi (6,418.77 km) |
| Niles to Tavira | 4,121.66 mi (6,633.18 km) |
| Niles to Tomar | 3,997.22 mi (6,432.90 km) |
| Niles to Tondela | 3,980.55 mi (6,406.08 km) |
| Niles to Torre de Moncorvo | 3,999.87 mi (6,437.17 km) |
| Niles to Torres Novas | 3,996.52 mi (6,431.78 km) |
