| Knottingley to Opwijk | 297.17 mi (478.25 km) |
| Knottingley to Ostend | 245.14 mi (394.51 km) |
| Knottingley to Oud-Heverlee | 319.09 mi (513.53 km) |
| Knottingley to Oud-Turnhout | 309.53 mi (498.14 km) |
| Knottingley to Oudenaarde | 284.36 mi (457.64 km) |
| Knottingley to Oudenburg | 249.68 mi (401.81 km) |
| Knottingley to Oupeye | 357.56 mi (575.44 km) |
| Knottingley to Overijse | 316.99 mi (510.15 km) |
| Knottingley to Overpelt | 328.90 mi (529.31 km) |
| Knottingley to Paal | 327.39 mi (526.88 km) |
| Knottingley to Peer | 333.50 mi (536.71 km) |
| Knottingley to Pepinster | 369.60 mi (594.81 km) |
| Knottingley to Peruwelz | 300.82 mi (484.12 km) |
| Knottingley to Perwez | 333.51 mi (536.73 km) |
| Knottingley to Philippeville | 345.66 mi (556.29 km) |
