| Howard to Sesimbra | 3,946.71 mi (6,351.62 km) |
| Howard to Setubal | 3,952.95 mi (6,361.66 km) |
| Howard to Sever do Vouga | 3,892.92 mi (6,265.06 km) |
| Howard to Silves | 4,025.23 mi (6,477.98 km) |
| Howard to Sines | 3,976.12 mi (6,398.95 km) |
| Howard to Sintra | 3,920.16 mi (6,308.90 km) |
| Howard to Sobrado de Paiva | 3,886.17 mi (6,254.18 km) |
| Howard to Sobral de Monte Agraco | 3,922.48 mi (6,312.62 km) |
| Howard to Soure | 3,906.69 mi (6,287.20 km) |
| Howard to Tabua | 3,921.78 mi (6,311.49 km) |
| Howard to Tavira | 4,063.73 mi (6,539.94 km) |
| Howard to Tomar | 3,933.29 mi (6,330.01 km) |
| Howard to Tondela | 3,913.52 mi (6,298.20 km) |
| Howard to Torre de Moncorvo | 3,929.61 mi (6,324.10 km) |
| Howard to Torres Novas | 3,933.14 mi (6,329.78 km) |
