| Bonhill to Smolyan | 1,642.37 mi (2,643.13 km) |
| Bonhill to Sofia | 1,538.08 mi (2,475.30 km) |
| Bonhill to Sopot | 1,590.75 mi (2,560.06 km) |
| Bonhill to Sozopol | 1,708.41 mi (2,749.42 km) |
| Bonhill to Sredets | 1,693.48 mi (2,725.39 km) |
| Bonhill to Stamboliyski | 1,608.76 mi (2,589.05 km) |
| Bonhill to Stara Zagora | 1,633.55 mi (2,628.95 km) |
| Bonhill to Svilengrad | 1,686.22 mi (2,713.71 km) |
| Bonhill to Svishtov | 1,565.43 mi (2,519.31 km) |
| Bonhill to Targovishte | 1,627.71 mi (2,619.55 km) |
| Bonhill to Teteven | 1,560.42 mi (2,511.26 km) |
| Bonhill to Troyan | 1,578.09 mi (2,539.69 km) |
| Bonhill to Tryavna | 1,606.95 mi (2,586.14 km) |
| Bonhill to Tutrakan | 1,591.29 mi (2,560.93 km) |
| Bonhill to Varna | 1,678.11 mi (2,700.66 km) |
