| Isbergues to Smolyan | 1,228.09 mi (1,976.42 km) |
| Isbergues to Sofia | 1,125.53 mi (1,811.36 km) |
| Isbergues to Sopot | 1,186.04 mi (1,908.74 km) |
| Isbergues to Sozopol | 1,318.66 mi (2,122.18 km) |
| Isbergues to Sredets | 1,300.20 mi (2,092.47 km) |
| Isbergues to Stamboliyski | 1,198.15 mi (1,928.24 km) |
| Isbergues to Stara Zagora | 1,232.07 mi (1,982.82 km) |
| Isbergues to Svilengrad | 1,281.94 mi (2,063.08 km) |
| Isbergues to Svishtov | 1,173.93 mi (1,889.25 km) |
| Isbergues to Targovishte | 1,239.72 mi (1,995.14 km) |
| Isbergues to Teteven | 1,155.39 mi (1,859.42 km) |
| Isbergues to Troyan | 1,175.39 mi (1,891.61 km) |
| Isbergues to Tryavna | 1,208.71 mi (1,945.23 km) |
| Isbergues to Tutrakan | 1,212.18 mi (1,950.81 km) |
| Isbergues to Varna | 1,297.64 mi (2,088.35 km) |
