| East Retford to Smolyan | 1,434.32 mi (2,308.32 km) |
| East Retford to Sofia | 1,330.45 mi (2,141.15 km) |
| East Retford to Sopot | 1,386.81 mi (2,231.86 km) |
| East Retford to Sozopol | 1,511.68 mi (2,432.81 km) |
| East Retford to Sredets | 1,495.09 mi (2,406.11 km) |
| East Retford to Stamboliyski | 1,402.25 mi (2,256.70 km) |
| East Retford to Stara Zagora | 1,431.23 mi (2,303.34 km) |
| East Retford to Svilengrad | 1,482.83 mi (2,386.38 km) |
| East Retford to Svishtov | 1,367.28 mi (2,200.43 km) |
| East Retford to Targovishte | 1,431.43 mi (2,303.67 km) |
| East Retford to Teteven | 1,356.22 mi (2,182.63 km) |
| East Retford to Troyan | 1,375.00 mi (2,212.85 km) |
| East Retford to Tryavna | 1,405.97 mi (2,262.70 km) |
| East Retford to Tutrakan | 1,398.83 mi (2,251.20 km) |
| East Retford to Varna | 1,485.46 mi (2,390.61 km) |
