| Flitwick to Smolyan | 1,381.85 mi (2,223.87 km) |
| Flitwick to Sofia | 1,278.69 mi (2,057.86 km) |
| Flitwick to Sopot | 1,337.65 mi (2,152.74 km) |
| Flitwick to Sozopol | 1,467.21 mi (2,361.25 km) |
| Flitwick to Sredets | 1,449.53 mi (2,332.79 km) |
| Flitwick to Stamboliyski | 1,351.08 mi (2,174.35 km) |
| Flitwick to Stara Zagora | 1,383.09 mi (2,225.86 km) |
| Flitwick to Svilengrad | 1,433.71 mi (2,307.33 km) |
| Flitwick to Svishtov | 1,322.44 mi (2,128.25 km) |
| Flitwick to Targovishte | 1,387.61 mi (2,233.14 km) |
| Flitwick to Teteven | 1,306.99 mi (2,103.40 km) |
| Flitwick to Troyan | 1,326.53 mi (2,134.84 km) |
| Flitwick to Tryavna | 1,358.92 mi (2,186.97 km) |
| Flitwick to Tutrakan | 1,357.77 mi (2,185.12 km) |
| Flitwick to Varna | 1,443.89 mi (2,323.71 km) |
