| Somerset to Sesimbra | 3,408.18 mi (5,484.94 km) |
| Somerset to Setubal | 3,416.09 mi (5,497.67 km) |
| Somerset to Sever do Vouga | 3,380.84 mi (5,440.93 km) |
| Somerset to Silves | 3,477.43 mi (5,596.39 km) |
| Somerset to Sines | 3,433.82 mi (5,526.20 km) |
| Somerset to Sintra | 3,383.93 mi (5,445.90 km) |
| Somerset to Sobrado de Paiva | 3,377.68 mi (5,435.85 km) |
| Somerset to Sobral de Monte Agraco | 3,389.43 mi (5,454.76 km) |
| Somerset to Soure | 3,386.34 mi (5,449.79 km) |
| Somerset to Tabua | 3,407.21 mi (5,483.37 km) |
| Somerset to Tavira | 3,518.70 mi (5,662.81 km) |
| Somerset to Tomar | 3,409.24 mi (5,486.64 km) |
| Somerset to Tondela | 3,400.35 mi (5,472.34 km) |
| Somerset to Torre de Moncorvo | 3,427.66 mi (5,516.28 km) |
| Somerset to Torres Novas | 3,407.25 mi (5,483.43 km) |
