| Kasterlee to Sofia | 1,044.11 mi (1,680.33 km) |
| Kasterlee to Sopot | 1,101.49 mi (1,772.68 km) |
| Kasterlee to Sozopol | 1,229.09 mi (1,978.03 km) |
| Kasterlee to Sredets | 1,211.77 mi (1,950.16 km) |
| Kasterlee to Stamboliyski | 1,116.13 mi (1,796.24 km) |
| Kasterlee to Stara Zagora | 1,146.42 mi (1,844.98 km) |
| Kasterlee to Svilengrad | 1,197.57 mi (1,927.30 km) |
| Kasterlee to Svishtov | 1,084.38 mi (1,745.15 km) |
| Kasterlee to Targovishte | 1,149.27 mi (1,849.56 km) |
| Kasterlee to Teteven | 1,070.86 mi (1,723.38 km) |
| Kasterlee to Troyan | 1,090.00 mi (1,754.19 km) |
| Kasterlee to Tryavna | 1,121.74 mi (1,805.26 km) |
| Kasterlee to Tutrakan | 1,118.80 mi (1,800.53 km) |
| Kasterlee to Varna | 1,205.02 mi (1,939.30 km) |
| Kasterlee to Veliki Preslav | 1,162.16 mi (1,870.31 km) |
