| Erith to Smolyan | 1,341.86 mi (2,159.52 km) |
| Erith to Sofia | 1,239.01 mi (1,993.99 km) |
| Erith to Sopot | 1,298.76 mi (2,090.15 km) |
| Erith to Sozopol | 1,429.80 mi (2,301.04 km) |
| Erith to Sredets | 1,411.75 mi (2,272.00 km) |
| Erith to Stamboliyski | 1,311.53 mi (2,110.70 km) |
| Erith to Stara Zagora | 1,344.50 mi (2,163.76 km) |
| Erith to Svilengrad | 1,394.76 mi (2,244.65 km) |
| Erith to Svishtov | 1,285.01 mi (2,068.02 km) |
| Erith to Targovishte | 1,350.48 mi (2,173.39 km) |
| Erith to Teteven | 1,268.10 mi (2,040.81 km) |
| Erith to Troyan | 1,287.87 mi (2,072.63 km) |
| Erith to Tryavna | 1,320.71 mi (2,125.48 km) |
| Erith to Tutrakan | 1,321.64 mi (2,126.97 km) |
| Erith to Varna | 1,407.50 mi (2,265.15 km) |
