| Concarneau to Smolyan | 1,460.88 mi (2,351.06 km) |
| Concarneau to Sofia | 1,364.08 mi (2,195.28 km) |
| Concarneau to Sopot | 1,431.12 mi (2,303.17 km) |
| Concarneau to Sozopol | 1,574.37 mi (2,533.70 km) |
| Concarneau to Sredets | 1,553.15 mi (2,499.56 km) |
| Concarneau to Stamboliyski | 1,436.29 mi (2,311.48 km) |
| Concarneau to Stara Zagora | 1,479.00 mi (2,380.22 km) |
| Concarneau to Svilengrad | 1,524.35 mi (2,453.21 km) |
| Concarneau to Svishtov | 1,432.46 mi (2,305.32 km) |
| Concarneau to Targovishte | 1,499.33 mi (2,412.93 km) |
| Concarneau to Teteven | 1,401.21 mi (2,255.03 km) |
| Concarneau to Troyan | 1,422.97 mi (2,290.04 km) |
| Concarneau to Tryavna | 1,459.68 mi (2,349.12 km) |
| Concarneau to Tutrakan | 1,480.14 mi (2,382.06 km) |
| Concarneau to Varna | 1,562.02 mi (2,513.82 km) |
