| Libourne to Smolyan | 1,270.83 mi (2,045.20 km) |
| Libourne to Sofia | 1,180.94 mi (1,900.53 km) |
| Libourne to Sopot | 1,251.32 mi (2,013.81 km) |
| Libourne to Sozopol | 1,400.04 mi (2,253.15 km) |
| Libourne to Sredets | 1,376.93 mi (2,215.95 km) |
| Libourne to Stamboliyski | 1,250.88 mi (2,013.10 km) |
| Libourne to Stara Zagora | 1,299.49 mi (2,091.33 km) |
| Libourne to Svilengrad | 1,340.17 mi (2,156.79 km) |
| Libourne to Svishtov | 1,264.03 mi (2,034.26 km) |
| Libourne to Targovishte | 1,330.14 mi (2,140.65 km) |
| Libourne to Teteven | 1,222.81 mi (1,967.92 km) |
| Libourne to Troyan | 1,245.41 mi (2,004.29 km) |
| Libourne to Tryavna | 1,283.99 mi (2,066.37 km) |
| Libourne to Tutrakan | 1,319.17 mi (2,123.00 km) |
| Libourne to Varna | 1,395.71 mi (2,246.18 km) |
