| Leerdam to Smolyan | 1,163.90 mi (1,873.12 km) |
| Leerdam to Sofia | 1,059.85 mi (1,705.66 km) |
| Leerdam to Sopot | 1,115.43 mi (1,795.10 km) |
| Leerdam to Sozopol | 1,239.87 mi (1,995.38 km) |
| Leerdam to Sredets | 1,223.27 mi (1,968.66 km) |
| Leerdam to Stamboliyski | 1,131.39 mi (1,820.80 km) |
| Leerdam to Stara Zagora | 1,159.64 mi (1,866.26 km) |
| Leerdam to Svilengrad | 1,211.40 mi (1,949.56 km) |
| Leerdam to Svishtov | 1,095.46 mi (1,762.98 km) |
| Leerdam to Targovishte | 1,159.65 mi (1,866.28 km) |
| Leerdam to Teteven | 1,084.87 mi (1,745.92 km) |
| Leerdam to Troyan | 1,103.49 mi (1,775.89 km) |
| Leerdam to Tryavna | 1,134.25 mi (1,825.41 km) |
| Leerdam to Tutrakan | 1,127.38 mi (1,814.35 km) |
| Leerdam to Varna | 1,213.94 mi (1,953.65 km) |
