| Cayce to Sesimbra | 3,919.70 mi (6,308.14 km) |
| Cayce to Setubal | 3,928.40 mi (6,322.16 km) |
| Cayce to Sever do Vouga | 3,905.53 mi (6,285.35 km) |
| Cayce to Silves | 3,983.18 mi (6,410.30 km) |
| Cayce to Sines | 3,943.05 mi (6,345.73 km) |
| Cayce to Sintra | 3,896.90 mi (6,271.45 km) |
| Cayce to Sobrado de Paiva | 3,904.01 mi (6,282.90 km) |
| Cayce to Sobral de Monte Agraco | 3,903.98 mi (6,282.85 km) |
| Cayce to Soure | 3,907.17 mi (6,287.98 km) |
| Cayce to Tabua | 3,930.52 mi (6,325.56 km) |
| Cayce to Tavira | 4,025.55 mi (6,478.49 km) |
| Cayce to Tomar | 3,928.07 mi (6,321.61 km) |
| Cayce to Tondela | 3,924.37 mi (6,315.66 km) |
| Cayce to Torre de Moncorvo | 3,956.36 mi (6,367.14 km) |
| Cayce to Torres Novas | 3,925.19 mi (6,316.98 km) |
