| Bootle to Smolyan | 1,515.36 mi (2,438.74 km) |
| Bootle to Sofia | 1,411.67 mi (2,271.86 km) |
| Bootle to Sopot | 1,468.77 mi (2,363.76 km) |
| Bootle to Sozopol | 1,594.75 mi (2,566.50 km) |
| Bootle to Sredets | 1,577.93 mi (2,539.44 km) |
| Bootle to Stamboliyski | 1,483.67 mi (2,387.73 km) |
| Bootle to Stara Zagora | 1,513.46 mi (2,435.68 km) |
| Bootle to Svilengrad | 1,564.83 mi (2,518.36 km) |
| Bootle to Svishtov | 1,450.24 mi (2,333.93 km) |
| Bootle to Targovishte | 1,514.61 mi (2,437.53 km) |
| Bootle to Teteven | 1,438.16 mi (2,314.49 km) |
| Bootle to Troyan | 1,457.14 mi (2,345.04 km) |
| Bootle to Tryavna | 1,488.46 mi (2,395.45 km) |
| Bootle to Tutrakan | 1,482.47 mi (2,385.81 km) |
| Bootle to Varna | 1,569.04 mi (2,525.13 km) |
