| Bellegarde-sur-Valserine to Smolyan | 988.28 mi (1,590.49 km) |
| Bellegarde-sur-Valserine to Sofia | 893.47 mi (1,437.91 km) |
| Bellegarde-sur-Valserine to Sopot | 962.03 mi (1,548.24 km) |
| Bellegarde-sur-Valserine to Sozopol | 1,108.16 mi (1,783.42 km) |
| Bellegarde-sur-Valserine to Sredets | 1,085.98 mi (1,747.72 km) |
| Bellegarde-sur-Valserine to Stamboliyski | 965.07 mi (1,553.13 km) |
| Bellegarde-sur-Valserine to Stara Zagora | 1,010.17 mi (1,625.71 km) |
| Bellegarde-sur-Valserine to Svilengrad | 1,053.78 mi (1,695.89 km) |
| Bellegarde-sur-Valserine to Svishtov | 968.97 mi (1,559.40 km) |
| Bellegarde-sur-Valserine to Targovishte | 1,035.61 mi (1,666.65 km) |
| Bellegarde-sur-Valserine to Teteven | 932.63 mi (1,500.92 km) |
| Bellegarde-sur-Valserine to Troyan | 954.82 mi (1,536.64 km) |
| Bellegarde-sur-Valserine to Tryavna | 992.50 mi (1,597.28 km) |
| Bellegarde-sur-Valserine to Tutrakan | 1,021.29 mi (1,643.60 km) |
| Bellegarde-sur-Valserine to Varna | 1,100.11 mi (1,770.46 km) |
