| Herzogenrath to Smolyan | 1,091.28 mi (1,756.24 km) |
| Herzogenrath to Sofia | 987.58 mi (1,589.36 km) |
| Herzogenrath to Sopot | 1,045.03 mi (1,681.81 km) |
| Herzogenrath to Sozopol | 1,172.96 mi (1,887.69 km) |
| Herzogenrath to Sredets | 1,155.54 mi (1,859.66 km) |
| Herzogenrath to Stamboliyski | 1,059.61 mi (1,705.28 km) |
| Herzogenrath to Stara Zagora | 1,090.00 mi (1,754.19 km) |
| Herzogenrath to Svilengrad | 1,141.10 mi (1,836.43 km) |
| Herzogenrath to Svishtov | 1,028.22 mi (1,654.77 km) |
| Herzogenrath to Targovishte | 1,093.21 mi (1,759.35 km) |
| Herzogenrath to Teteven | 1,014.39 mi (1,632.50 km) |
| Herzogenrath to Troyan | 1,033.57 mi (1,663.37 km) |
| Herzogenrath to Tryavna | 1,065.39 mi (1,714.58 km) |
| Herzogenrath to Tutrakan | 1,063.10 mi (1,710.89 km) |
| Herzogenrath to Varna | 1,149.24 mi (1,849.52 km) |
