| Bydgoszcz to Navodari | 775.34 mi (1,247.79 km) |
| Bydgoszcz to Negresti-Oas | 433.93 mi (698.35 km) |
| Bydgoszcz to Nehoiu | 653.65 mi (1,051.95 km) |
| Bydgoszcz to Ocna Mures | 533.21 mi (858.12 km) |
| Bydgoszcz to Odobesti | 650.22 mi (1,046.43 km) |
| Bydgoszcz to Odorheiu Secuiesc | 571.77 mi (920.17 km) |
| Bydgoszcz to Oltenita | 737.34 mi (1,186.64 km) |
| Bydgoszcz to Onesti | 614.31 mi (988.63 km) |
| Bydgoszcz to Oradea | 452.51 mi (728.24 km) |
| Bydgoszcz to Orastie | 553.64 mi (891.00 km) |
| Bydgoszcz to Oravita | 582.55 mi (937.53 km) |
| Bydgoszcz to Orsova | 613.22 mi (986.88 km) |
| Bydgoszcz to Otelu Rosu | 560.45 mi (901.96 km) |
| Bydgoszcz to Otopeni | 695.77 mi (1,119.73 km) |
| Bydgoszcz to Ovidiu | 776.76 mi (1,250.07 km) |
