| Barton upon Humber to Octeville | 284.89 mi (458.48 km) |
| Barton upon Humber to Oignies | 265.83 mi (427.81 km) |
| Barton upon Humber to Oissel | 307.18 mi (494.35 km) |
| Barton upon Humber to Olivet | 414.93 mi (667.77 km) |
| Barton upon Humber to Ollioules | 782.91 mi (1,259.97 km) |
| Barton upon Humber to Olonne-sur-Mer | 497.27 mi (800.27 km) |
| Barton upon Humber to Oloron-Sainte-Marie | 724.76 mi (1,166.39 km) |
| Barton upon Humber to Onet Village | 658.23 mi (1,059.32 km) |
| Barton upon Humber to Onnaing | 285.30 mi (459.14 km) |
| Barton upon Humber to Orange | 700.93 mi (1,128.04 km) |
| Barton upon Humber to Orchies | 271.50 mi (436.93 km) |
| Barton upon Humber to Orleans | 412.43 mi (663.74 km) |
| Barton upon Humber to Orly | 362.71 mi (583.72 km) |
| Barton upon Humber to Ormesson-sur-Marne | 362.16 mi (582.83 km) |
| Barton upon Humber to Orsay | 362.82 mi (583.90 km) |
