| Dunkerque to Smolyan | 1,242.25 mi (1,999.21 km) |
| Dunkerque to Sofia | 1,139.30 mi (1,833.53 km) |
| Dunkerque to Sopot | 1,198.91 mi (1,929.46 km) |
| Dunkerque to Sozopol | 1,329.97 mi (2,140.38 km) |
| Dunkerque to Sredets | 1,311.89 mi (2,111.28 km) |
| Dunkerque to Stamboliyski | 1,211.79 mi (1,950.19 km) |
| Dunkerque to Stara Zagora | 1,244.62 mi (2,003.03 km) |
| Dunkerque to Svilengrad | 1,294.92 mi (2,083.97 km) |
| Dunkerque to Svishtov | 1,185.18 mi (1,907.36 km) |
| Dunkerque to Targovishte | 1,250.69 mi (2,012.80 km) |
| Dunkerque to Teteven | 1,168.25 mi (1,880.12 km) |
| Dunkerque to Troyan | 1,188.00 mi (1,911.90 km) |
| Dunkerque to Tryavna | 1,220.83 mi (1,964.73 km) |
| Dunkerque to Tutrakan | 1,222.09 mi (1,966.76 km) |
| Dunkerque to Varna | 1,307.87 mi (2,104.81 km) |
