| Ronciglione to Smolyan | 642.99 mi (1,034.79 km) |
| Ronciglione to Sofia | 566.57 mi (911.81 km) |
| Ronciglione to Sopot | 638.77 mi (1,028.00 km) |
| Ronciglione to Sozopol | 789.64 mi (1,270.80 km) |
| Ronciglione to Sredets | 764.58 mi (1,230.47 km) |
| Ronciglione to Stamboliyski | 629.95 mi (1,013.81 km) |
| Ronciglione to Stara Zagora | 685.28 mi (1,102.85 km) |
| Ronciglione to Svilengrad | 717.88 mi (1,155.31 km) |
| Ronciglione to Svishtov | 669.83 mi (1,077.99 km) |
| Ronciglione to Targovishte | 730.89 mi (1,176.25 km) |
| Ronciglione to Teteven | 613.93 mi (988.02 km) |
| Ronciglione to Troyan | 636.72 mi (1,024.70 km) |
| Ronciglione to Tryavna | 676.39 mi (1,088.55 km) |
| Ronciglione to Tutrakan | 734.88 mi (1,182.68 km) |
| Ronciglione to Varna | 798.02 mi (1,284.29 km) |
