| Montesilvano to Smolyan | 544.77 mi (876.72 km) |
| Montesilvano to Sofia | 466.81 mi (751.26 km) |
| Montesilvano to Sopot | 539.02 mi (867.47 km) |
| Montesilvano to Sozopol | 689.96 mi (1,110.38 km) |
| Montesilvano to Sredets | 664.97 mi (1,070.17 km) |
| Montesilvano to Stamboliyski | 530.77 mi (854.20 km) |
| Montesilvano to Stara Zagora | 585.67 mi (942.55 km) |
| Montesilvano to Svilengrad | 619.02 mi (996.21 km) |
| Montesilvano to Svishtov | 570.04 mi (917.39 km) |
| Montesilvano to Targovishte | 630.97 mi (1,015.45 km) |
| Montesilvano to Teteven | 514.05 mi (827.28 km) |
| Montesilvano to Troyan | 536.85 mi (863.97 km) |
| Montesilvano to Tryavna | 576.52 mi (927.82 km) |
| Montesilvano to Tutrakan | 635.37 mi (1,022.52 km) |
| Montesilvano to Varna | 698.10 mi (1,123.49 km) |
