| Duiven to Smolyan | 1,131.58 mi (1,821.10 km) |
| Duiven to Sofia | 1,027.39 mi (1,653.42 km) |
| Duiven to Sopot | 1,081.97 mi (1,741.27 km) |
| Duiven to Sozopol | 1,204.86 mi (1,939.04 km) |
| Duiven to Sredets | 1,188.59 mi (1,912.85 km) |
| Duiven to Stamboliyski | 1,098.63 mi (1,768.07 km) |
| Duiven to Stara Zagora | 1,125.81 mi (1,811.81 km) |
| Duiven to Svilengrad | 1,177.84 mi (1,895.56 km) |
| Duiven to Svishtov | 1,060.66 mi (1,706.97 km) |
| Duiven to Targovishte | 1,124.51 mi (1,809.72 km) |
| Duiven to Teteven | 1,051.47 mi (1,692.18 km) |
| Duiven to Troyan | 1,069.82 mi (1,721.71 km) |
| Duiven to Tryavna | 1,100.10 mi (1,770.43 km) |
| Duiven to Tutrakan | 1,091.51 mi (1,756.61 km) |
| Duiven to Varna | 1,178.16 mi (1,896.07 km) |
