| Saint-Nazaire to Smolyan | 1,377.11 mi (2,216.25 km) |
| Saint-Nazaire to Sofia | 1,281.31 mi (2,062.06 km) |
| Saint-Nazaire to Sopot | 1,349.04 mi (2,171.07 km) |
| Saint-Nazaire to Sozopol | 1,493.49 mi (2,403.54 km) |
| Saint-Nazaire to Sredets | 1,471.90 mi (2,368.79 km) |
| Saint-Nazaire to Stamboliyski | 1,353.25 mi (2,177.85 km) |
| Saint-Nazaire to Stara Zagora | 1,397.05 mi (2,248.33 km) |
| Saint-Nazaire to Svilengrad | 1,441.65 mi (2,320.12 km) |
| Saint-Nazaire to Svishtov | 1,352.44 mi (2,176.54 km) |
| Saint-Nazaire to Targovishte | 1,419.29 mi (2,284.12 km) |
| Saint-Nazaire to Teteven | 1,319.32 mi (2,123.24 km) |
| Saint-Nazaire to Troyan | 1,341.26 mi (2,158.55 km) |
| Saint-Nazaire to Tryavna | 1,378.37 mi (2,218.27 km) |
| Saint-Nazaire to Tutrakan | 1,401.65 mi (2,255.73 km) |
| Saint-Nazaire to Varna | 1,482.63 mi (2,386.07 km) |
