| Leighton Buzzard to Smolyan | 1,386.23 mi (2,230.91 km) |
| Leighton Buzzard to Sofia | 1,283.17 mi (2,065.06 km) |
| Leighton Buzzard to Sopot | 1,342.39 mi (2,160.36 km) |
| Leighton Buzzard to Sozopol | 1,472.39 mi (2,369.58 km) |
| Leighton Buzzard to Sredets | 1,454.60 mi (2,340.95 km) |
| Leighton Buzzard to Stamboliyski | 1,355.60 mi (2,181.63 km) |
| Leighton Buzzard to Stara Zagora | 1,387.92 mi (2,233.64 km) |
| Leighton Buzzard to Svilengrad | 1,438.43 mi (2,314.92 km) |
| Leighton Buzzard to Svishtov | 1,327.60 mi (2,136.56 km) |
| Leighton Buzzard to Targovishte | 1,392.86 mi (2,241.59 km) |
| Leighton Buzzard to Teteven | 1,311.72 mi (2,111.02 km) |
| Leighton Buzzard to Troyan | 1,331.33 mi (2,142.57 km) |
| Leighton Buzzard to Tryavna | 1,363.86 mi (2,194.93 km) |
| Leighton Buzzard to Tutrakan | 1,363.28 mi (2,193.99 km) |
| Leighton Buzzard to Varna | 1,449.33 mi (2,332.48 km) |
