| Ocna Mures to Octeville | 1,193.86 mi (1,921.33 km) |
| Ocna Mures to Oignies | 993.51 mi (1,598.90 km) |
| Ocna Mures to Oissel | 1,070.60 mi (1,722.96 km) |
| Ocna Mures to Olivet | 1,033.79 mi (1,663.72 km) |
| Ocna Mures to Ollioules | 909.55 mi (1,463.77 km) |
| Ocna Mures to Olonne-sur-Mer | 1,214.59 mi (1,954.70 km) |
| Ocna Mures to Oloron-Sainte-Marie | 1,214.74 mi (1,954.94 km) |
| Ocna Mures to Onet Village | 1,038.35 mi (1,671.06 km) |
| Ocna Mures to Onnaing | 966.36 mi (1,555.21 km) |
| Ocna Mures to Orange | 937.03 mi (1,508.00 km) |
| Ocna Mures to Orchies | 982.67 mi (1,581.46 km) |
| Ocna Mures to Orleans | 1,033.28 mi (1,662.91 km) |
| Ocna Mures to Orly | 1,010.43 mi (1,626.13 km) |
| Ocna Mures to Ormesson-sur-Marne | 1,003.87 mi (1,615.57 km) |
| Ocna Mures to Orsay | 1,019.73 mi (1,641.10 km) |
