| Waltham Abbey to Smolyan | 1,354.06 mi (2,179.15 km) |
| Waltham Abbey to Sofia | 1,251.07 mi (2,013.40 km) |
| Waltham Abbey to Sopot | 1,310.47 mi (2,109.00 km) |
| Waltham Abbey to Sozopol | 1,440.87 mi (2,318.86 km) |
| Waltham Abbey to Sredets | 1,422.98 mi (2,290.06 km) |
| Waltham Abbey to Stamboliyski | 1,323.53 mi (2,130.02 km) |
| Waltham Abbey to Stara Zagora | 1,356.08 mi (2,182.39 km) |
| Waltham Abbey to Svilengrad | 1,406.50 mi (2,263.54 km) |
| Waltham Abbey to Svishtov | 1,296.08 mi (2,085.83 km) |
| Waltham Abbey to Targovishte | 1,361.42 mi (2,191.00 km) |
| Waltham Abbey to Teteven | 1,279.81 mi (2,059.65 km) |
| Waltham Abbey to Troyan | 1,299.47 mi (2,091.30 km) |
| Waltham Abbey to Tryavna | 1,332.12 mi (2,143.84 km) |
| Waltham Abbey to Tutrakan | 1,332.16 mi (2,143.90 km) |
| Waltham Abbey to Varna | 1,418.13 mi (2,282.26 km) |
