| Borken to Smolyan | 1,097.28 mi (1,765.90 km) |
| Borken to Sofia | 993.04 mi (1,598.14 km) |
| Borken to Sopot | 1,047.10 mi (1,685.14 km) |
| Borken to Sozopol | 1,169.26 mi (1,881.74 km) |
| Borken to Sredets | 1,153.12 mi (1,855.77 km) |
| Borken to Stamboliyski | 1,064.10 mi (1,712.51 km) |
| Borken to Stara Zagora | 1,090.74 mi (1,755.37 km) |
| Borken to Svilengrad | 1,142.90 mi (1,839.32 km) |
| Borken to Svishtov | 1,025.15 mi (1,649.82 km) |
| Borken to Targovishte | 1,088.85 mi (1,752.34 km) |
| Borken to Teteven | 1,016.63 mi (1,636.11 km) |
| Borken to Troyan | 1,034.84 mi (1,665.41 km) |
| Borken to Tryavna | 1,064.87 mi (1,713.75 km) |
| Borken to Tutrakan | 1,055.57 mi (1,698.78 km) |
| Borken to Varna | 1,142.26 mi (1,838.29 km) |
