| Barton upon Humber to Opwijk | 271.03 mi (436.18 km) |
| Barton upon Humber to Ostend | 221.21 mi (356.01 km) |
| Barton upon Humber to Oud-Heverlee | 292.45 mi (470.65 km) |
| Barton upon Humber to Oud-Turnhout | 280.88 mi (452.04 km) |
| Barton upon Humber to Oudenaarde | 260.01 mi (418.45 km) |
| Barton upon Humber to Oudenburg | 225.68 mi (363.20 km) |
| Barton upon Humber to Oupeye | 329.72 mi (530.63 km) |
| Barton upon Humber to Overijse | 290.76 mi (467.93 km) |
| Barton upon Humber to Overpelt | 299.97 mi (482.76 km) |
| Barton upon Humber to Paal | 299.29 mi (481.66 km) |
| Barton upon Humber to Peer | 304.75 mi (490.46 km) |
| Barton upon Humber to Pepinster | 341.89 mi (550.21 km) |
| Barton upon Humber to Peruwelz | 277.71 mi (446.93 km) |
| Barton upon Humber to Perwez | 307.25 mi (494.46 km) |
| Barton upon Humber to Philippeville | 321.21 mi (516.94 km) |
