| Campobasso to Smolyan | 518.31 mi (834.14 km) |
| Campobasso to Sofia | 450.54 mi (725.07 km) |
| Campobasso to Sopot | 521.93 mi (839.96 km) |
| Campobasso to Sozopol | 671.21 mi (1,080.20 km) |
| Campobasso to Sredets | 645.64 mi (1,039.06 km) |
| Campobasso to Stamboliyski | 509.03 mi (819.20 km) |
| Campobasso to Stara Zagora | 566.72 mi (912.05 km) |
| Campobasso to Svilengrad | 595.00 mi (957.56 km) |
| Campobasso to Svishtov | 561.13 mi (903.04 km) |
| Campobasso to Targovishte | 618.39 mi (995.20 km) |
| Campobasso to Teteven | 499.53 mi (803.92 km) |
| Campobasso to Troyan | 521.85 mi (839.84 km) |
| Campobasso to Tryavna | 561.17 mi (903.12 km) |
| Campobasso to Tutrakan | 628.91 mi (1,012.14 km) |
| Campobasso to Varna | 684.92 mi (1,102.27 km) |
