| Port Huron to Sesena | 3,920.39 mi (6,309.26 km) |
| Port Huron to Sestao | 3,840.08 mi (6,180.01 km) |
| Port Huron to Sevilla | 3,917.50 mi (6,304.60 km) |
| Port Huron to Sevilla La Nueva | 3,896.79 mi (6,271.28 km) |
| Port Huron to Silla | 4,095.92 mi (6,591.74 km) |
| Port Huron to Silleda | 3,627.77 mi (5,838.33 km) |
| Port Huron to Sitges | 4,124.70 mi (6,638.07 km) |
| Port Huron to Socuellamos | 3,990.54 mi (6,422.15 km) |
| Port Huron to Soller | 4,219.46 mi (6,790.57 km) |
| Port Huron to Solsona | 4,084.13 mi (6,572.77 km) |
| Port Huron to Son Servera | 4,254.23 mi (6,846.53 km) |
| Port Huron to Sonseca | 3,923.29 mi (6,313.93 km) |
| Port Huron to Sopelana | 3,838.85 mi (6,178.03 km) |
| Port Huron to Soria | 3,917.04 mi (6,303.87 km) |
| Port Huron to Suances | 3,790.12 mi (6,099.60 km) |
