| Bollnas to Smolyan | 1,408.99 mi (2,267.55 km) |
| Bollnas to Sofia | 1,320.01 mi (2,124.35 km) |
| Bollnas to Sopot | 1,337.37 mi (2,152.28 km) |
| Bollnas to Sozopol | 1,389.41 mi (2,236.04 km) |
| Bollnas to Sredets | 1,387.02 mi (2,232.19 km) |
| Bollnas to Stamboliyski | 1,370.04 mi (2,204.87 km) |
| Bollnas to Stara Zagora | 1,362.03 mi (2,191.98 km) |
| Bollnas to Svilengrad | 1,413.36 mi (2,274.58 km) |
| Bollnas to Svishtov | 1,278.98 mi (2,058.32 km) |
| Bollnas to Targovishte | 1,318.84 mi (2,122.46 km) |
| Bollnas to Teteven | 1,314.29 mi (2,115.14 km) |
| Bollnas to Troyan | 1,321.25 mi (2,126.35 km) |
| Bollnas to Tryavna | 1,331.12 mi (2,142.23 km) |
| Bollnas to Tutrakan | 1,265.98 mi (2,037.40 km) |
| Bollnas to Varna | 1,339.45 mi (2,155.63 km) |
