| Ploiesti to Solofra | 632.06 mi (1,017.20 km) |
| Ploiesti to Somma Lombardo | 841.60 mi (1,354.43 km) |
| Ploiesti to Somma Vesuviana | 649.42 mi (1,045.13 km) |
| Ploiesti to Sommacampagna | 738.65 mi (1,188.74 km) |
| Ploiesti to Sona | 739.34 mi (1,189.85 km) |
| Ploiesti to Sondrio | 784.69 mi (1,262.83 km) |
| Ploiesti to Sora | 661.30 mi (1,064.26 km) |
| Ploiesti to Sorbolo | 761.15 mi (1,224.95 km) |
| Ploiesti to Soresina | 787.26 mi (1,266.97 km) |
| Ploiesti to Sorisole | 795.35 mi (1,279.99 km) |
| Ploiesti to Sorrento | 660.76 mi (1,063.38 km) |
| Ploiesti to Sorso | 926.46 mi (1,490.99 km) |
| Ploiesti to Sortino | 783.77 mi (1,261.35 km) |
| Ploiesti to Soverato Marina | 651.04 mi (1,047.75 km) |
| Ploiesti to Sovicille | 741.47 mi (1,193.28 km) |
