| Bolsover to Smolyan | 1,444.79 mi (2,325.16 km) |
| Bolsover to Sofia | 1,341.00 mi (2,158.13 km) |
| Bolsover to Sopot | 1,397.74 mi (2,249.45 km) |
| Bolsover to Sozopol | 1,523.25 mi (2,451.43 km) |
| Bolsover to Sredets | 1,506.52 mi (2,424.51 km) |
| Bolsover to Stamboliyski | 1,412.90 mi (2,273.84 km) |
| Bolsover to Stara Zagora | 1,442.31 mi (2,321.17 km) |
| Bolsover to Svilengrad | 1,493.78 mi (2,404.01 km) |
| Bolsover to Svishtov | 1,378.78 mi (2,218.93 km) |
| Bolsover to Targovishte | 1,443.07 mi (2,322.40 km) |
| Bolsover to Teteven | 1,367.13 mi (2,200.19 km) |
| Bolsover to Troyan | 1,386.02 mi (2,230.59 km) |
| Bolsover to Tryavna | 1,417.19 mi (2,280.75 km) |
| Bolsover to Tutrakan | 1,410.79 mi (2,270.45 km) |
| Bolsover to Varna | 1,497.38 mi (2,409.80 km) |
