| Knjazevac to Oerlinghausen | 864.27 mi (1,390.91 km) |
| Knjazevac to Oestrich-Winkel | 815.52 mi (1,312.46 km) |
| Knjazevac to Offenburg | 774.45 mi (1,246.36 km) |
| Knjazevac to Oftersheim | 772.41 mi (1,243.08 km) |
| Knjazevac to Ohrdruf | 745.70 mi (1,200.08 km) |
| Knjazevac to Ohringen | 730.32 mi (1,175.33 km) |
| Knjazevac to Olbernhau | 653.62 mi (1,051.90 km) |
| Knjazevac to Olching | 624.94 mi (1,005.74 km) |
| Knjazevac to Oldenburg | 929.91 mi (1,496.54 km) |
| Knjazevac to Oldenburg in Holstein | 909.65 mi (1,463.95 km) |
| Knjazevac to Olfen | 899.10 mi (1,446.96 km) |
| Knjazevac to Olpe | 856.77 mi (1,378.84 km) |
| Knjazevac to Olsberg | 845.72 mi (1,361.05 km) |
| Knjazevac to Oranienburg | 765.94 mi (1,232.66 km) |
| Knjazevac to Ortenberg | 787.26 mi (1,266.97 km) |
