| Saint-Herblain to Smolyan | 1,350.33 mi (2,173.15 km) |
| Saint-Herblain to Sofia | 1,254.57 mi (2,019.04 km) |
| Saint-Herblain to Sopot | 1,322.35 mi (2,128.11 km) |
| Saint-Herblain to Sozopol | 1,466.89 mi (2,360.73 km) |
| Saint-Herblain to Sredets | 1,445.27 mi (2,325.93 km) |
| Saint-Herblain to Stamboliyski | 1,326.50 mi (2,134.80 km) |
| Saint-Herblain to Stara Zagora | 1,370.36 mi (2,205.39 km) |
| Saint-Herblain to Svilengrad | 1,414.92 mi (2,277.09 km) |
| Saint-Herblain to Svishtov | 1,325.92 mi (2,133.87 km) |
| Saint-Herblain to Targovishte | 1,392.76 mi (2,241.44 km) |
| Saint-Herblain to Teteven | 1,292.64 mi (2,080.31 km) |
| Saint-Herblain to Troyan | 1,314.60 mi (2,115.64 km) |
| Saint-Herblain to Tryavna | 1,351.73 mi (2,175.41 km) |
| Saint-Herblain to Tutrakan | 1,375.29 mi (2,213.32 km) |
| Saint-Herblain to Varna | 1,456.18 mi (2,343.49 km) |
