| Port Huron to Sesimbra | 3,729.19 mi (6,001.55 km) |
| Port Huron to Setubal | 3,736.11 mi (6,012.69 km) |
| Port Huron to Sever do Vouga | 3,685.71 mi (5,931.58 km) |
| Port Huron to Silves | 3,804.27 mi (6,122.38 km) |
| Port Huron to Sines | 3,757.19 mi (6,046.62 km) |
| Port Huron to Sintra | 3,703.47 mi (5,960.15 km) |
| Port Huron to Sobrado de Paiva | 3,680.36 mi (5,922.96 km) |
| Port Huron to Sobral de Monte Agraco | 3,707.05 mi (5,965.92 km) |
| Port Huron to Soure | 3,696.25 mi (5,948.53 km) |
| Port Huron to Tabua | 3,713.68 mi (5,976.59 km) |
| Port Huron to Tavira | 3,843.98 mi (6,186.29 km) |
| Port Huron to Tomar | 3,721.47 mi (5,989.13 km) |
| Port Huron to Tondela | 3,705.95 mi (5,964.15 km) |
| Port Huron to Torre de Moncorvo | 3,726.55 mi (5,997.30 km) |
| Port Huron to Torres Novas | 3,720.59 mi (5,987.71 km) |
