| Castel San Giorgio to Setubal | 1,260.83 mi (2,029.12 km) |
| Castel San Giorgio to Sever do Vouga | 1,203.72 mi (1,937.20 km) |
| Castel San Giorgio to Silves | 1,263.42 mi (2,033.27 km) |
| Castel San Giorgio to Sines | 1,269.82 mi (2,043.58 km) |
| Castel San Giorgio to Sintra | 1,282.11 mi (2,063.35 km) |
| Castel San Giorgio to Sobrado de Paiva | 1,195.92 mi (1,924.65 km) |
| Castel San Giorgio to Sobral de Monte Agraco | 1,266.23 mi (2,037.80 km) |
| Castel San Giorgio to Soure | 1,224.85 mi (1,971.21 km) |
| Castel San Giorgio to Tabua | 1,189.90 mi (1,914.96 km) |
| Castel San Giorgio to Tavira | 1,223.81 mi (1,969.53 km) |
| Castel San Giorgio to Tomar | 1,219.29 mi (1,962.26 km) |
| Castel San Giorgio to Tondela | 1,191.10 mi (1,916.89 km) |
| Castel San Giorgio to Torre de Moncorvo | 1,136.02 mi (1,828.25 km) |
| Castel San Giorgio to Torres Novas | 1,227.22 mi (1,975.02 km) |
| Castel San Giorgio to Torres Vedras | 1,271.20 mi (2,045.80 km) |
