| Portes-les-Valence to Somma Lombardo | 194.12 mi (312.40 km) |
| Portes-les-Valence to Somma Vesuviana | 556.94 mi (896.30 km) |
| Portes-les-Valence to Sommacampagna | 293.35 mi (472.10 km) |
| Portes-les-Valence to Sona | 292.75 mi (471.14 km) |
| Portes-les-Valence to Sondrio | 257.74 mi (414.80 km) |
| Portes-les-Valence to Sora | 490.31 mi (789.08 km) |
| Portes-les-Valence to Sorbolo | 272.86 mi (439.12 km) |
| Portes-les-Valence to Soresina | 244.63 mi (393.69 km) |
| Portes-les-Valence to Sorisole | 239.80 mi (385.91 km) |
| Portes-les-Valence to Sorrento | 563.56 mi (906.97 km) |
| Portes-les-Valence to Sorso | 338.19 mi (544.27 km) |
| Portes-les-Valence to Sortino | 749.78 mi (1,206.66 km) |
| Portes-les-Valence to Soverato Marina | 736.85 mi (1,185.84 km) |
| Portes-les-Valence to Sovicille | 334.00 mi (537.52 km) |
| Portes-les-Valence to Spello | 408.98 mi (658.19 km) |
