| Monfalcone to Smolyan | 628.58 mi (1,011.60 km) |
| Monfalcone to Sofia | 529.59 mi (852.29 km) |
| Monfalcone to Sopot | 595.84 mi (958.91 km) |
| Monfalcone to Sozopol | 739.48 mi (1,190.08 km) |
| Monfalcone to Sredets | 717.95 mi (1,155.43 km) |
| Monfalcone to Stamboliyski | 602.15 mi (969.07 km) |
| Monfalcone to Stara Zagora | 643.66 mi (1,035.87 km) |
| Monfalcone to Svilengrad | 689.56 mi (1,109.74 km) |
| Monfalcone to Svishtov | 598.91 mi (963.86 km) |
| Monfalcone to Targovishte | 665.69 mi (1,071.32 km) |
| Monfalcone to Teteven | 565.87 mi (910.67 km) |
| Monfalcone to Troyan | 587.60 mi (945.65 km) |
| Monfalcone to Tryavna | 624.44 mi (1,004.93 km) |
| Monfalcone to Tutrakan | 650.58 mi (1,047.01 km) |
| Monfalcone to Varna | 729.74 mi (1,174.40 km) |
