| Billerbeck to Smolyan | 1,087.72 mi (1,750.51 km) |
| Billerbeck to Sofia | 983.43 mi (1,582.68 km) |
| Billerbeck to Sopot | 1,036.61 mi (1,668.26 km) |
| Billerbeck to Sozopol | 1,157.31 mi (1,862.51 km) |
| Billerbeck to Sredets | 1,141.49 mi (1,837.05 km) |
| Billerbeck to Stamboliyski | 1,054.19 mi (1,696.55 km) |
| Billerbeck to Stara Zagora | 1,079.89 mi (1,737.91 km) |
| Billerbeck to Svilengrad | 1,132.28 mi (1,822.22 km) |
| Billerbeck to Svishtov | 1,013.45 mi (1,630.99 km) |
| Billerbeck to Targovishte | 1,076.80 mi (1,732.95 km) |
| Billerbeck to Teteven | 1,006.20 mi (1,619.33 km) |
| Billerbeck to Troyan | 1,024.16 mi (1,648.23 km) |
| Billerbeck to Tryavna | 1,053.75 mi (1,695.84 km) |
| Billerbeck to Tutrakan | 1,042.83 mi (1,678.27 km) |
| Billerbeck to Varna | 1,129.58 mi (1,817.89 km) |
