| Pornic to Somma Lombardo | 523.74 mi (842.88 km) |
| Pornic to Somma Vesuviana | 925.85 mi (1,490.01 km) |
| Pornic to Sommacampagna | 629.28 mi (1,012.73 km) |
| Pornic to Sona | 627.89 mi (1,010.49 km) |
| Pornic to Sondrio | 571.14 mi (919.16 km) |
| Pornic to Sora | 858.75 mi (1,382.02 km) |
| Pornic to Sorbolo | 621.95 mi (1,000.93 km) |
| Pornic to Soresina | 585.13 mi (941.67 km) |
| Pornic to Sorisole | 567.52 mi (913.34 km) |
| Pornic to Sorrento | 932.49 mi (1,500.69 km) |
| Pornic to Sorso | 686.47 mi (1,104.76 km) |
| Pornic to Sortino | 1,110.86 mi (1,787.76 km) |
| Pornic to Soverato Marina | 1,105.15 mi (1,778.57 km) |
| Pornic to Sovicille | 700.08 mi (1,126.67 km) |
| Pornic to Spello | 774.02 mi (1,245.66 km) |
