| Harborne to Smolyan | 1,450.56 mi (2,334.45 km) |
| Harborne to Sofia | 1,347.31 mi (2,168.29 km) |
| Harborne to Sopot | 1,405.98 mi (2,262.70 km) |
| Harborne to Sozopol | 1,534.85 mi (2,470.11 km) |
| Harborne to Sredets | 1,517.35 mi (2,441.93 km) |
| Harborne to Stamboliyski | 1,419.65 mi (2,284.71 km) |
| Harborne to Stara Zagora | 1,451.28 mi (2,335.62 km) |
| Harborne to Svilengrad | 1,502.05 mi (2,417.31 km) |
| Harborne to Svishtov | 1,390.11 mi (2,237.16 km) |
| Harborne to Targovishte | 1,455.12 mi (2,341.79 km) |
| Harborne to Teteven | 1,375.32 mi (2,213.36 km) |
| Harborne to Troyan | 1,394.76 mi (2,244.65 km) |
| Harborne to Tryavna | 1,426.96 mi (2,296.46 km) |
| Harborne to Tutrakan | 1,424.74 mi (2,292.90 km) |
| Harborne to Varna | 1,510.99 mi (2,431.70 km) |
