| Hoeilaart to Sofia | 1,048.33 mi (1,687.13 km) |
| Hoeilaart to Sopot | 1,107.30 mi (1,782.02 km) |
| Hoeilaart to Sozopol | 1,237.55 mi (1,991.64 km) |
| Hoeilaart to Sredets | 1,219.62 mi (1,962.79 km) |
| Hoeilaart to Stamboliyski | 1,120.70 mi (1,803.59 km) |
| Hoeilaart to Stara Zagora | 1,152.81 mi (1,855.26 km) |
| Hoeilaart to Svilengrad | 1,203.34 mi (1,936.59 km) |
| Hoeilaart to Svishtov | 1,092.75 mi (1,758.62 km) |
| Hoeilaart to Targovishte | 1,158.16 mi (1,863.88 km) |
| Hoeilaart to Teteven | 1,076.64 mi (1,732.68 km) |
| Hoeilaart to Troyan | 1,096.22 mi (1,764.20 km) |
| Hoeilaart to Tryavna | 1,128.78 mi (1,816.60 km) |
| Hoeilaart to Tutrakan | 1,129.28 mi (1,817.40 km) |
| Hoeilaart to Varna | 1,215.12 mi (1,955.54 km) |
| Hoeilaart to Veliki Preslav | 1,171.12 mi (1,884.74 km) |
