| Constanta to Solofra | 737.88 mi (1,187.50 km) |
| Constanta to Somma Lombardo | 978.19 mi (1,574.25 km) |
| Constanta to Somma Vesuviana | 756.79 mi (1,217.94 km) |
| Constanta to Sommacampagna | 874.46 mi (1,407.30 km) |
| Constanta to Sona | 875.24 mi (1,408.56 km) |
| Constanta to Sondrio | 922.20 mi (1,484.14 km) |
| Constanta to Sora | 776.98 mi (1,250.42 km) |
| Constanta to Sorbolo | 895.41 mi (1,441.03 km) |
| Constanta to Soresina | 922.85 mi (1,485.18 km) |
| Constanta to Sorisole | 932.01 mi (1,499.93 km) |
| Constanta to Sorrento | 766.39 mi (1,233.38 km) |
| Constanta to Sorso | 1,045.29 mi (1,682.23 km) |
| Constanta to Sortino | 859.58 mi (1,383.37 km) |
| Constanta to Soverato Marina | 730.61 mi (1,175.80 km) |
| Constanta to Sovicille | 869.32 mi (1,399.03 km) |
