| Loughton to Smolyan | 1,350.26 mi (2,173.04 km) |
| Loughton to Sofia | 1,247.28 mi (2,007.31 km) |
| Loughton to Sopot | 1,306.72 mi (2,102.97 km) |
| Loughton to Sozopol | 1,437.20 mi (2,312.96 km) |
| Loughton to Sredets | 1,419.29 mi (2,284.13 km) |
| Loughton to Stamboliyski | 1,319.75 mi (2,123.94 km) |
| Loughton to Stara Zagora | 1,352.35 mi (2,176.39 km) |
| Loughton to Svilengrad | 1,402.75 mi (2,257.50 km) |
| Loughton to Svishtov | 1,292.41 mi (2,079.93 km) |
| Loughton to Targovishte | 1,357.77 mi (2,185.13 km) |
| Loughton to Teteven | 1,276.06 mi (2,053.62 km) |
| Loughton to Troyan | 1,295.74 mi (2,085.29 km) |
| Loughton to Tryavna | 1,328.41 mi (2,137.87 km) |
| Loughton to Tutrakan | 1,328.56 mi (2,138.12 km) |
| Loughton to Varna | 1,414.52 mi (2,276.45 km) |
