| Elfers to Smolyan | 5,756.46 mi (9,264.13 km) |
| Elfers to Sofia | 5,656.22 mi (9,102.80 km) |
| Elfers to Sopot | 5,719.44 mi (9,204.55 km) |
| Elfers to Sozopol | 5,854.14 mi (9,421.33 km) |
| Elfers to Sredets | 5,835.51 mi (9,391.34 km) |
| Elfers to Stamboliyski | 5,729.01 mi (9,219.95 km) |
| Elfers to Stara Zagora | 5,766.15 mi (9,279.72 km) |
| Elfers to Svilengrad | 5,814.83 mi (9,358.07 km) |
| Elfers to Svishtov | 5,709.42 mi (9,188.42 km) |
| Elfers to Targovishte | 5,775.16 mi (9,294.22 km) |
| Elfers to Teteven | 5,688.89 mi (9,155.39 km) |
| Elfers to Troyan | 5,709.45 mi (9,188.47 km) |
| Elfers to Tryavna | 5,743.58 mi (9,243.41 km) |
| Elfers to Tutrakan | 5,746.32 mi (9,247.81 km) |
| Elfers to Varna | 5,832.33 mi (9,386.23 km) |
