| Viersen to Smolyan | 1,093.37 mi (1,759.61 km) |
| Viersen to Sofia | 989.39 mi (1,592.27 km) |
| Viersen to Sopot | 1,045.52 mi (1,682.60 km) |
| Viersen to Sozopol | 1,171.21 mi (1,884.88 km) |
| Viersen to Sredets | 1,154.30 mi (1,857.66 km) |
| Viersen to Stamboliyski | 1,061.08 mi (1,707.64 km) |
| Viersen to Stara Zagora | 1,089.98 mi (1,754.16 km) |
| Viersen to Svilengrad | 1,141.54 mi (1,837.13 km) |
| Viersen to Svishtov | 1,026.64 mi (1,652.22 km) |
| Viersen to Targovishte | 1,091.15 mi (1,756.04 km) |
| Viersen to Teteven | 1,014.93 mi (1,633.37 km) |
| Viersen to Troyan | 1,033.73 mi (1,663.63 km) |
| Viersen to Tryavna | 1,064.85 mi (1,713.72 km) |
| Viersen to Tutrakan | 1,059.76 mi (1,705.52 km) |
| Viersen to Varna | 1,146.16 mi (1,844.57 km) |
