| Port Huron to Santa Venerina | 4,843.05 mi (7,794.14 km) |
| Port Huron to Santeramo in Colle | 4,773.71 mi (7,682.54 km) |
| Port Huron to Santo Stefano di Magra | 4,355.36 mi (7,009.28 km) |
| Port Huron to Santo Stino di Livenza | 4,403.21 mi (7,086.28 km) |
| Port Huron to Sarezzo | 4,308.38 mi (6,933.66 km) |
| Port Huron to Sarno | 4,685.44 mi (7,540.49 km) |
| Port Huron to Saronno | 4,262.82 mi (6,860.34 km) |
| Port Huron to Sarzana | 4,359.12 mi (7,015.33 km) |
| Port Huron to Sassari | 4,436.08 mi (7,139.18 km) |
| Port Huron to Sasso Marconi | 4,399.87 mi (7,080.91 km) |
| Port Huron to Sassuolo | 4,375.13 mi (7,041.10 km) |
| Port Huron to Sava | 4,823.65 mi (7,762.91 km) |
| Port Huron to Saviano | 4,677.06 mi (7,526.99 km) |
| Port Huron to Savigliano | 4,243.31 mi (6,828.94 km) |
| Port Huron to Savignano sul Panaro | 4,387.83 mi (7,061.52 km) |
