| Bydgoszcz to Oerlinghausen | 399.92 mi (643.61 km) |
| Bydgoszcz to Oestrich-Winkel | 480.10 mi (772.64 km) |
| Bydgoszcz to Offenburg | 543.95 mi (875.40 km) |
| Bydgoszcz to Oftersheim | 482.14 mi (775.92 km) |
| Bydgoszcz to Ohrdruf | 347.33 mi (558.98 km) |
| Bydgoszcz to Ohringen | 456.77 mi (735.11 km) |
| Bydgoszcz to Olbernhau | 261.39 mi (420.67 km) |
| Bydgoszcz to Olching | 448.32 mi (721.51 km) |
| Bydgoszcz to Oldenburg | 405.37 mi (652.37 km) |
| Bydgoszcz to Oldenburg in Holstein | 302.06 mi (486.12 km) |
| Bydgoszcz to Olfen | 457.34 mi (736.02 km) |
| Bydgoszcz to Olpe | 455.18 mi (732.55 km) |
| Bydgoszcz to Olsberg | 420.53 mi (676.77 km) |
| Bydgoszcz to Oranienburg | 199.93 mi (321.76 km) |
| Bydgoszcz to Ortenberg | 427.38 mi (687.80 km) |
