| Aiken to Sesimbra | 3,967.80 mi (6,385.55 km) |
| Aiken to Setubal | 3,976.53 mi (6,399.60 km) |
| Aiken to Sever do Vouga | 3,953.94 mi (6,363.26 km) |
| Aiken to Silves | 4,031.11 mi (6,487.45 km) |
| Aiken to Sines | 3,991.09 mi (6,423.04 km) |
| Aiken to Sintra | 3,945.04 mi (6,348.93 km) |
| Aiken to Sobrado de Paiva | 3,952.45 mi (6,360.86 km) |
| Aiken to Sobral de Monte Agraco | 3,952.16 mi (6,360.39 km) |
| Aiken to Soure | 3,955.50 mi (6,365.76 km) |
| Aiken to Tabua | 3,978.90 mi (6,403.42 km) |
| Aiken to Tavira | 4,073.51 mi (6,555.67 km) |
| Aiken to Tomar | 3,976.35 mi (6,399.31 km) |
| Aiken to Tondela | 3,972.76 mi (6,393.54 km) |
| Aiken to Torre de Moncorvo | 4,004.84 mi (6,445.17 km) |
| Aiken to Torres Novas | 3,973.45 mi (6,394.65 km) |
