| Ardahan to Sesimbra | 2,716.10 mi (4,371.14 km) |
| Ardahan to Setubal | 2,703.66 mi (4,351.12 km) |
| Ardahan to Sever do Vouga | 2,626.80 mi (4,227.42 km) |
| Ardahan to Silves | 2,714.31 mi (4,368.26 km) |
| Ardahan to Sines | 2,716.34 mi (4,371.52 km) |
| Ardahan to Sintra | 2,722.01 mi (4,380.66 km) |
| Ardahan to Sobrado de Paiva | 2,615.52 mi (4,209.27 km) |
| Ardahan to Sobral de Monte Agraco | 2,704.84 mi (4,353.03 km) |
| Ardahan to Soure | 2,654.98 mi (4,272.78 km) |
| Ardahan to Tabua | 2,617.94 mi (4,213.17 km) |
| Ardahan to Tavira | 2,675.86 mi (4,306.38 km) |
| Ardahan to Tomar | 2,654.26 mi (4,271.63 km) |
| Ardahan to Tondela | 2,617.28 mi (4,212.11 km) |
| Ardahan to Torre de Moncorvo | 2,555.75 mi (4,113.09 km) |
| Ardahan to Torres Novas | 2,663.18 mi (4,285.98 km) |
