| Nairn to Octeville | 557.36 mi (896.99 km) |
| Nairn to Oignies | 564.48 mi (908.44 km) |
| Nairn to Oissel | 604.65 mi (973.10 km) |
| Nairn to Olivet | 713.17 mi (1,147.74 km) |
| Nairn to Ollioules | 1,083.61 mi (1,743.91 km) |
| Nairn to Olonne-sur-Mer | 768.55 mi (1,236.87 km) |
| Nairn to Oloron-Sainte-Marie | 1,004.41 mi (1,616.45 km) |
| Nairn to Onet Village | 954.68 mi (1,536.41 km) |
| Nairn to Onnaing | 581.79 mi (936.30 km) |
| Nairn to Orange | 1,001.37 mi (1,611.56 km) |
| Nairn to Orchies | 569.18 mi (916.00 km) |
| Nairn to Orleans | 710.75 mi (1,143.84 km) |
| Nairn to Orly | 663.04 mi (1,067.06 km) |
| Nairn to Ormesson-sur-Marne | 662.68 mi (1,066.49 km) |
| Nairn to Orsay | 662.78 mi (1,066.64 km) |
