| Abertillery to Octeville | 159.22 mi (256.24 km) |
| Abertillery to Oignies | 279.51 mi (449.83 km) |
| Abertillery to Oissel | 248.11 mi (399.29 km) |
| Abertillery to Olivet | 348.68 mi (561.14 km) |
| Abertillery to Ollioules | 725.69 mi (1,167.89 km) |
| Abertillery to Olonne-sur-Mer | 364.05 mi (585.89 km) |
| Abertillery to Oloron-Sainte-Marie | 601.33 mi (967.75 km) |
| Abertillery to Onet Village | 572.99 mi (922.13 km) |
| Abertillery to Onnaing | 306.41 mi (493.12 km) |
| Abertillery to Orange | 639.67 mi (1,029.45 km) |
| Abertillery to Orchies | 289.72 mi (466.26 km) |
| Abertillery to Orleans | 346.82 mi (558.16 km) |
| Abertillery to Orly | 319.43 mi (514.08 km) |
| Abertillery to Ormesson-sur-Marne | 322.45 mi (518.93 km) |
| Abertillery to Orsay | 314.75 mi (506.54 km) |
