| Knjazevac to Smolyan | 175.64 mi (282.66 km) |
| Knjazevac to Sofia | 71.43 mi (114.95 km) |
| Knjazevac to Sopot | 130.84 mi (210.56 km) |
| Knjazevac to Sozopol | 276.58 mi (445.11 km) |
| Knjazevac to Sredets | 253.87 mi (408.57 km) |
| Knjazevac to Stamboliyski | 142.28 mi (228.97 km) |
| Knjazevac to Stara Zagora | 178.54 mi (287.33 km) |
| Knjazevac to Svilengrad | 225.80 mi (363.39 km) |
| Knjazevac to Svishtov | 146.25 mi (235.37 km) |
| Knjazevac to Targovishte | 209.11 mi (336.54 km) |
| Knjazevac to Teteven | 100.74 mi (162.12 km) |
| Knjazevac to Troyan | 122.66 mi (197.40 km) |
| Knjazevac to Tryavna | 160.56 mi (258.40 km) |
| Knjazevac to Tutrakan | 212.12 mi (341.37 km) |
| Knjazevac to Varna | 276.11 mi (444.35 km) |
