| Eckington to Smolyan | 1,449.83 mi (2,333.27 km) |
| Eckington to Sofia | 1,346.01 mi (2,166.19 km) |
| Eckington to Sopot | 1,402.63 mi (2,257.31 km) |
| Eckington to Sozopol | 1,527.90 mi (2,458.92 km) |
| Eckington to Sredets | 1,511.22 mi (2,432.08 km) |
| Eckington to Stamboliyski | 1,417.88 mi (2,281.86 km) |
| Eckington to Stara Zagora | 1,447.14 mi (2,328.95 km) |
| Eckington to Svilengrad | 1,498.66 mi (2,411.86 km) |
| Eckington to Svishtov | 1,383.46 mi (2,226.46 km) |
| Eckington to Targovishte | 1,447.69 mi (2,329.84 km) |
| Eckington to Teteven | 1,372.03 mi (2,208.06 km) |
| Eckington to Troyan | 1,390.88 mi (2,238.40 km) |
| Eckington to Tryavna | 1,421.98 mi (2,288.45 km) |
| Eckington to Tutrakan | 1,415.28 mi (2,277.67 km) |
| Eckington to Varna | 1,501.89 mi (2,417.05 km) |
