| Ponders End to Smolyan | 1,354.95 mi (2,180.59 km) |
| Ponders End to Sofia | 1,252.00 mi (2,014.90 km) |
| Ponders End to Sopot | 1,311.51 mi (2,110.66 km) |
| Ponders End to Sozopol | 1,442.08 mi (2,320.81 km) |
| Ponders End to Sredets | 1,424.15 mi (2,291.95 km) |
| Ponders End to Stamboliyski | 1,324.48 mi (2,131.55 km) |
| Ponders End to Stara Zagora | 1,357.15 mi (2,184.12 km) |
| Ponders End to Svilengrad | 1,407.52 mi (2,265.19 km) |
| Ponders End to Svishtov | 1,297.29 mi (2,087.78 km) |
| Ponders End to Targovishte | 1,362.67 mi (2,193.00 km) |
| Ponders End to Teteven | 1,280.84 mi (2,061.32 km) |
| Ponders End to Troyan | 1,300.54 mi (2,093.02 km) |
| Ponders End to Tryavna | 1,333.24 mi (2,145.65 km) |
| Ponders End to Tutrakan | 1,333.51 mi (2,146.08 km) |
| Ponders End to Varna | 1,419.45 mi (2,284.39 km) |
