| Grimbergen to Sofia | 1,056.50 mi (1,700.26 km) |
| Grimbergen to Sopot | 1,115.10 mi (1,794.59 km) |
| Grimbergen to Sozopol | 1,244.72 mi (2,003.19 km) |
| Grimbergen to Sredets | 1,226.95 mi (1,974.58 km) |
| Grimbergen to Stamboliyski | 1,128.79 mi (1,816.62 km) |
| Grimbergen to Stara Zagora | 1,160.48 mi (1,867.61 km) |
| Grimbergen to Svilengrad | 1,211.17 mi (1,949.18 km) |
| Grimbergen to Svishtov | 1,099.94 mi (1,770.18 km) |
| Grimbergen to Targovishte | 1,165.22 mi (1,875.24 km) |
| Grimbergen to Teteven | 1,084.44 mi (1,745.24 km) |
| Grimbergen to Troyan | 1,103.93 mi (1,776.60 km) |
| Grimbergen to Tryavna | 1,136.30 mi (1,828.69 km) |
| Grimbergen to Tutrakan | 1,135.92 mi (1,828.09 km) |
| Grimbergen to Varna | 1,221.87 mi (1,966.42 km) |
| Grimbergen to Veliki Preslav | 1,178.16 mi (1,896.07 km) |
