| Leavenworth to Smolyan | 5,684.03 mi (9,147.56 km) |
| Leavenworth to Sofia | 5,579.74 mi (8,979.72 km) |
| Leavenworth to Sopot | 5,631.67 mi (9,063.29 km) |
| Leavenworth to Sozopol | 5,743.99 mi (9,244.06 km) |
| Leavenworth to Sredets | 5,730.66 mi (9,222.61 km) |
| Leavenworth to Stamboliyski | 5,650.32 mi (9,093.31 km) |
| Leavenworth to Stara Zagora | 5,673.67 mi (9,130.89 km) |
| Leavenworth to Svilengrad | 5,726.76 mi (9,216.32 km) |
| Leavenworth to Svishtov | 5,603.07 mi (9,017.27 km) |
| Leavenworth to Targovishte | 5,663.39 mi (9,114.34 km) |
| Leavenworth to Teteven | 5,601.48 mi (9,014.71 km) |
| Leavenworth to Troyan | 5,618.70 mi (9,042.42 km) |
| Leavenworth to Tryavna | 5,646.39 mi (9,086.98 km) |
| Leavenworth to Tutrakan | 5,623.29 mi (9,049.81 km) |
| Leavenworth to Varna | 5,709.46 mi (9,188.49 km) |
