| Issoire to Smolyan | 1,104.61 mi (1,777.69 km) |
| Issoire to Sofia | 1,012.39 mi (1,629.28 km) |
| Issoire to Sopot | 1,082.04 mi (1,741.38 km) |
| Issoire to Sozopol | 1,229.73 mi (1,979.06 km) |
| Issoire to Sredets | 1,207.02 mi (1,942.51 km) |
| Issoire to Stamboliyski | 1,083.15 mi (1,743.16 km) |
| Issoire to Stara Zagora | 1,130.24 mi (1,818.95 km) |
| Issoire to Svilengrad | 1,172.27 mi (1,886.59 km) |
| Issoire to Svishtov | 1,092.26 mi (1,757.82 km) |
| Issoire to Targovishte | 1,158.64 mi (1,864.64 km) |
| Issoire to Teteven | 1,053.11 mi (1,694.82 km) |
| Issoire to Troyan | 1,075.55 mi (1,730.93 km) |
| Issoire to Tryavna | 1,113.77 mi (1,792.44 km) |
| Issoire to Tutrakan | 1,146.26 mi (1,844.73 km) |
| Issoire to Varna | 1,223.79 mi (1,969.49 km) |
