| Hereford to Octeville | 174.24 mi (280.40 km) |
| Hereford to Oignies | 270.01 mi (434.54 km) |
| Hereford to Oissel | 250.79 mi (403.61 km) |
| Hereford to Olivet | 354.81 mi (571.02 km) |
| Hereford to Ollioules | 732.86 mi (1,179.42 km) |
| Hereford to Olonne-sur-Mer | 383.74 mi (617.57 km) |
| Hereford to Oloron-Sainte-Marie | 620.05 mi (997.87 km) |
| Hereford to Onet Village | 584.51 mi (940.68 km) |
| Hereford to Onnaing | 296.42 mi (477.05 km) |
| Hereford to Orange | 647.20 mi (1,041.57 km) |
| Hereford to Orchies | 279.77 mi (450.25 km) |
| Hereford to Orleans | 352.81 mi (567.79 km) |
| Hereford to Orly | 320.78 mi (516.24 km) |
| Hereford to Ormesson-sur-Marne | 323.19 mi (520.13 km) |
| Hereford to Orsay | 316.89 mi (509.99 km) |
