| Hennebont to Smolyan | 1,430.82 mi (2,302.69 km) |
| Hennebont to Sofia | 1,334.08 mi (2,146.99 km) |
| Hennebont to Sopot | 1,401.17 mi (2,254.96 km) |
| Hennebont to Sozopol | 1,544.52 mi (2,485.66 km) |
| Hennebont to Sredets | 1,523.27 mi (2,451.46 km) |
| Hennebont to Stamboliyski | 1,406.27 mi (2,263.17 km) |
| Hennebont to Stara Zagora | 1,449.06 mi (2,332.03 km) |
| Hennebont to Svilengrad | 1,494.35 mi (2,404.93 km) |
| Hennebont to Svishtov | 1,402.69 mi (2,257.42 km) |
| Hennebont to Targovishte | 1,469.56 mi (2,365.03 km) |
| Hennebont to Teteven | 1,371.27 mi (2,206.85 km) |
| Hennebont to Troyan | 1,393.04 mi (2,241.88 km) |
| Hennebont to Tryavna | 1,429.78 mi (2,301.01 km) |
| Hennebont to Tutrakan | 1,450.55 mi (2,334.44 km) |
| Hennebont to Varna | 1,532.32 mi (2,466.04 km) |
