| Leighton Buzzard to Octeville | 163.90 mi (263.77 km) |
| Leighton Buzzard to Oignies | 187.19 mi (301.25 km) |
| Leighton Buzzard to Oissel | 193.76 mi (311.82 km) |
| Leighton Buzzard to Olivet | 302.30 mi (486.50 km) |
| Leighton Buzzard to Ollioules | 677.56 mi (1,090.43 km) |
| Leighton Buzzard to Olonne-sur-Mer | 375.10 mi (603.67 km) |
| Leighton Buzzard to Oloron-Sainte-Marie | 602.66 mi (969.88 km) |
| Leighton Buzzard to Onet Village | 542.73 mi (873.44 km) |
| Leighton Buzzard to Onnaing | 212.65 mi (342.22 km) |
| Leighton Buzzard to Orange | 593.51 mi (955.16 km) |
| Leighton Buzzard to Orchies | 196.24 mi (315.82 km) |
| Leighton Buzzard to Orleans | 299.95 mi (482.73 km) |
| Leighton Buzzard to Orly | 257.24 mi (413.99 km) |
| Leighton Buzzard to Ormesson-sur-Marne | 258.19 mi (415.52 km) |
| Leighton Buzzard to Orsay | 255.41 mi (411.04 km) |
