| Alfter to Setubal | 1,145.51 mi (1,843.52 km) |
| Alfter to Sever do Vouga | 1,009.93 mi (1,625.32 km) |
| Alfter to Silves | 1,205.99 mi (1,940.86 km) |
| Alfter to Sines | 1,176.09 mi (1,892.74 km) |
| Alfter to Sintra | 1,147.05 mi (1,845.99 km) |
| Alfter to Sobrado de Paiva | 991.02 mi (1,594.90 km) |
| Alfter to Sobral de Monte Agraco | 1,127.30 mi (1,814.22 km) |
| Alfter to Soure | 1,054.75 mi (1,697.45 km) |
| Alfter to Tabua | 1,017.78 mi (1,637.95 km) |
| Alfter to Tavira | 1,186.04 mi (1,908.74 km) |
| Alfter to Tomar | 1,071.32 mi (1,724.13 km) |
| Alfter to Tondela | 1,011.40 mi (1,627.69 km) |
| Alfter to Torre de Moncorvo | 943.22 mi (1,517.97 km) |
| Alfter to Torres Novas | 1,082.39 mi (1,741.94 km) |
| Alfter to Torres Vedras | 1,127.67 mi (1,814.81 km) |
