| Saint-Quentin to Smolyan | 1,174.40 mi (1,890.01 km) |
| Saint-Quentin to Sofia | 1,072.51 mi (1,726.04 km) |
| Saint-Quentin to Sopot | 1,134.34 mi (1,825.54 km) |
| Saint-Quentin to Sozopol | 1,269.32 mi (2,042.78 km) |
| Saint-Quentin to Sredets | 1,250.27 mi (2,012.12 km) |
| Saint-Quentin to Stamboliyski | 1,145.26 mi (1,843.12 km) |
| Saint-Quentin to Stara Zagora | 1,180.83 mi (1,900.36 km) |
| Saint-Quentin to Svilengrad | 1,230.00 mi (1,979.49 km) |
| Saint-Quentin to Svishtov | 1,124.83 mi (1,810.23 km) |
| Saint-Quentin to Targovishte | 1,191.02 mi (1,916.76 km) |
| Saint-Quentin to Teteven | 1,103.74 mi (1,776.30 km) |
| Saint-Quentin to Troyan | 1,124.12 mi (1,809.10 km) |
| Saint-Quentin to Tryavna | 1,158.17 mi (1,863.90 km) |
| Saint-Quentin to Tutrakan | 1,165.27 mi (1,875.31 km) |
| Saint-Quentin to Varna | 1,250.11 mi (2,011.85 km) |
