| Feltham to Smolyan | 1,364.78 mi (2,196.39 km) |
| Feltham to Sofia | 1,262.07 mi (2,031.10 km) |
| Feltham to Sopot | 1,322.15 mi (2,127.79 km) |
| Feltham to Sozopol | 1,453.69 mi (2,339.49 km) |
| Feltham to Sredets | 1,435.53 mi (2,310.26 km) |
| Feltham to Stamboliyski | 1,334.64 mi (2,147.89 km) |
| Feltham to Stara Zagora | 1,367.99 mi (2,201.57 km) |
| Feltham to Svilengrad | 1,418.11 mi (2,282.23 km) |
| Feltham to Svishtov | 1,308.90 mi (2,106.48 km) |
| Feltham to Targovishte | 1,374.46 mi (2,211.98 km) |
| Feltham to Teteven | 1,291.49 mi (2,078.45 km) |
| Feltham to Troyan | 1,311.35 mi (2,110.41 km) |
| Feltham to Tryavna | 1,344.35 mi (2,163.52 km) |
| Feltham to Tutrakan | 1,345.90 mi (2,166.02 km) |
| Feltham to Varna | 1,431.68 mi (2,304.07 km) |
