| Oud-Heverlee to Sofia | 1,042.37 mi (1,677.54 km) |
| Oud-Heverlee to Sopot | 1,101.03 mi (1,771.94 km) |
| Oud-Heverlee to Sozopol | 1,230.79 mi (1,980.76 km) |
| Oud-Heverlee to Sredets | 1,212.97 mi (1,952.09 km) |
| Oud-Heverlee to Stamboliyski | 1,114.68 mi (1,793.90 km) |
| Oud-Heverlee to Stara Zagora | 1,146.43 mi (1,845.00 km) |
| Oud-Heverlee to Svilengrad | 1,197.09 mi (1,926.53 km) |
| Oud-Heverlee to Svishtov | 1,086.00 mi (1,747.74 km) |
| Oud-Heverlee to Targovishte | 1,151.31 mi (1,852.85 km) |
| Oud-Heverlee to Teteven | 1,070.37 mi (1,722.60 km) |
| Oud-Heverlee to Troyan | 1,089.88 mi (1,753.99 km) |
| Oud-Heverlee to Tryavna | 1,122.28 mi (1,806.13 km) |
| Oud-Heverlee to Tutrakan | 1,122.14 mi (1,805.91 km) |
| Oud-Heverlee to Varna | 1,208.05 mi (1,944.18 km) |
| Oud-Heverlee to Veliki Preslav | 1,164.26 mi (1,873.70 km) |
