| Effingham to Smolyan | 5,462.89 mi (8,791.67 km) |
| Effingham to Sofia | 5,358.95 mi (8,624.39 km) |
| Effingham to Sopot | 5,414.13 mi (8,713.20 km) |
| Effingham to Sozopol | 5,533.05 mi (8,904.59 km) |
| Effingham to Sredets | 5,518.24 mi (8,880.75 km) |
| Effingham to Stamboliyski | 5,430.56 mi (8,739.65 km) |
| Effingham to Stara Zagora | 5,457.63 mi (8,783.21 km) |
| Effingham to Svilengrad | 5,509.93 mi (8,867.37 km) |
| Effingham to Svishtov | 5,390.19 mi (8,674.67 km) |
| Effingham to Targovishte | 5,452.34 mi (8,774.69 km) |
| Effingham to Teteven | 5,383.65 mi (8,664.14 km) |
| Effingham to Troyan | 5,401.84 mi (8,693.43 km) |
| Effingham to Tryavna | 5,431.40 mi (8,740.99 km) |
| Effingham to Tutrakan | 5,414.97 mi (8,714.54 km) |
| Effingham to Varna | 5,501.68 mi (8,854.09 km) |
