| Iernut to Octeville | 1,209.06 mi (1,945.79 km) |
| Iernut to Oignies | 1,007.99 mi (1,622.20 km) |
| Iernut to Oissel | 1,085.95 mi (1,747.67 km) |
| Iernut to Olivet | 1,050.04 mi (1,689.88 km) |
| Iernut to Ollioules | 927.75 mi (1,493.07 km) |
| Iernut to Olonne-sur-Mer | 1,231.36 mi (1,981.69 km) |
| Iernut to Oloron-Sainte-Marie | 1,232.63 mi (1,983.73 km) |
| Iernut to Onet Village | 1,056.13 mi (1,699.68 km) |
| Iernut to Onnaing | 980.86 mi (1,578.54 km) |
| Iernut to Orange | 954.99 mi (1,536.91 km) |
| Iernut to Orchies | 997.12 mi (1,604.71 km) |
| Iernut to Orleans | 1,049.51 mi (1,689.03 km) |
| Iernut to Orly | 1,026.15 mi (1,651.43 km) |
| Iernut to Ormesson-sur-Marne | 1,019.57 mi (1,640.83 km) |
| Iernut to Orsay | 1,035.49 mi (1,666.45 km) |
