| Gradignan to Smolyan | 1,289.00 mi (2,074.44 km) |
| Gradignan to Sofia | 1,199.55 mi (1,930.49 km) |
| Gradignan to Sopot | 1,270.07 mi (2,043.98 km) |
| Gradignan to Sozopol | 1,418.97 mi (2,283.61 km) |
| Gradignan to Sredets | 1,395.78 mi (2,246.29 km) |
| Gradignan to Stamboliyski | 1,269.33 mi (2,042.79 km) |
| Gradignan to Stara Zagora | 1,318.23 mi (2,121.48 km) |
| Gradignan to Svilengrad | 1,358.63 mi (2,186.50 km) |
| Gradignan to Svishtov | 1,283.29 mi (2,065.26 km) |
| Gradignan to Targovishte | 1,349.34 mi (2,171.55 km) |
| Gradignan to Teteven | 1,241.64 mi (1,998.23 km) |
| Gradignan to Troyan | 1,264.27 mi (2,034.64 km) |
| Gradignan to Tryavna | 1,302.91 mi (2,096.83 km) |
| Gradignan to Tutrakan | 1,338.71 mi (2,154.44 km) |
| Gradignan to Varna | 1,415.00 mi (2,277.22 km) |
