| Nivelles to Sofia | 1,049.09 mi (1,688.35 km) |
| Nivelles to Sopot | 1,108.61 mi (1,784.13 km) |
| Nivelles to Sozopol | 1,239.79 mi (1,995.24 km) |
| Nivelles to Sredets | 1,221.64 mi (1,966.05 km) |
| Nivelles to Stamboliyski | 1,121.56 mi (1,804.97 km) |
| Nivelles to Stara Zagora | 1,154.32 mi (1,857.69 km) |
| Nivelles to Svilengrad | 1,204.62 mi (1,938.64 km) |
| Nivelles to Svishtov | 1,095.00 mi (1,762.23 km) |
| Nivelles to Targovishte | 1,160.58 mi (1,867.77 km) |
| Nivelles to Teteven | 1,077.95 mi (1,734.79 km) |
| Nivelles to Troyan | 1,097.69 mi (1,766.56 km) |
| Nivelles to Tryavna | 1,130.54 mi (1,819.43 km) |
| Nivelles to Tutrakan | 1,132.28 mi (1,822.23 km) |
| Nivelles to Varna | 1,217.96 mi (1,960.12 km) |
| Nivelles to Veliki Preslav | 1,173.56 mi (1,888.67 km) |
