| Constanta to Smolyan | 267.38 mi (430.31 km) |
| Constanta to Sofia | 284.66 mi (458.12 km) |
| Constanta to Sopot | 221.27 mi (356.10 km) |
| Constanta to Sozopol | 129.70 mi (208.73 km) |
| Constanta to Sredets | 144.76 mi (232.97 km) |
| Constanta to Stamboliyski | 249.86 mi (402.10 km) |
| Constanta to Stara Zagora | 191.94 mi (308.89 km) |
| Constanta to Svilengrad | 206.46 mi (332.26 km) |
| Constanta to Svishtov | 167.83 mi (270.09 km) |
| Constanta to Targovishte | 120.39 mi (193.75 km) |
| Constanta to Teteven | 235.09 mi (378.35 km) |
| Constanta to Troyan | 215.29 mi (346.47 km) |
| Constanta to Tryavna | 180.85 mi (291.04 km) |
| Constanta to Tutrakan | 100.37 mi (161.52 km) |
| Constanta to Varna | 74.77 mi (120.32 km) |
