| Somerville to Sesimbra | 3,199.89 mi (5,149.72 km) |
| Somerville to Setubal | 3,207.58 mi (5,162.10 km) |
| Somerville to Sever do Vouga | 3,169.17 mi (5,100.29 km) |
| Somerville to Silves | 3,270.61 mi (5,263.55 km) |
| Somerville to Sines | 3,226.11 mi (5,191.92 km) |
| Somerville to Sintra | 3,175.27 mi (5,110.11 km) |
| Somerville to Sobrado de Paiva | 3,165.62 mi (5,094.57 km) |
| Somerville to Sobral de Monte Agraco | 3,180.35 mi (5,118.28 km) |
| Somerville to Soure | 3,175.64 mi (5,110.70 km) |
| Somerville to Tabua | 3,195.86 mi (5,143.24 km) |
| Somerville to Tavira | 3,311.53 mi (5,329.39 km) |
| Somerville to Tomar | 3,199.03 mi (5,148.34 km) |
| Somerville to Tondela | 3,188.84 mi (5,131.94 km) |
| Somerville to Torre de Moncorvo | 3,214.98 mi (5,174.02 km) |
| Somerville to Torres Novas | 3,197.26 mi (5,145.49 km) |
