| Sable-sur-Sarthe to Smolyan | 1,296.14 mi (2,085.93 km) |
| Sable-sur-Sarthe to Sofia | 1,198.77 mi (1,929.23 km) |
| Sable-sur-Sarthe to Sopot | 1,265.49 mi (2,036.61 km) |
| Sable-sur-Sarthe to Sozopol | 1,408.36 mi (2,266.54 km) |
| Sable-sur-Sarthe to Sredets | 1,387.23 mi (2,232.54 km) |
| Sable-sur-Sarthe to Stamboliyski | 1,271.10 mi (2,045.63 km) |
| Sable-sur-Sarthe to Stara Zagora | 1,313.31 mi (2,113.57 km) |
| Sable-sur-Sarthe to Svilengrad | 1,358.97 mi (2,187.04 km) |
| Sable-sur-Sarthe to Svishtov | 1,266.33 mi (2,037.96 km) |
| Sable-sur-Sarthe to Targovishte | 1,333.19 mi (2,145.57 km) |
| Sable-sur-Sarthe to Teteven | 1,235.51 mi (1,988.36 km) |
| Sable-sur-Sarthe to Troyan | 1,257.20 mi (2,023.26 km) |
| Sable-sur-Sarthe to Tryavna | 1,293.78 mi (2,082.14 km) |
| Sable-sur-Sarthe to Tutrakan | 1,313.97 mi (2,114.63 km) |
| Sable-sur-Sarthe to Varna | 1,395.83 mi (2,246.38 km) |
