| Erba to Octeville | 568.55 mi (915.00 km) |
| Erba to Oignies | 430.57 mi (692.94 km) |
| Erba to Oissel | 449.89 mi (724.03 km) |
| Erba to Olivet | 373.40 mi (600.92 km) |
| Erba to Ollioules | 248.58 mi (400.06 km) |
| Erba to Olonne-sur-Mer | 527.68 mi (849.22 km) |
| Erba to Oloron-Sainte-Marie | 516.43 mi (831.12 km) |
| Erba to Onet Village | 338.15 mi (544.19 km) |
| Erba to Onnaing | 408.36 mi (657.20 km) |
| Erba to Orange | 244.58 mi (393.61 km) |
| Erba to Orchies | 423.27 mi (681.18 km) |
| Erba to Orleans | 373.93 mi (601.79 km) |
| Erba to Orly | 378.22 mi (608.69 km) |
| Erba to Ormesson-sur-Marne | 373.96 mi (601.82 km) |
| Erba to Orsay | 384.85 mi (619.36 km) |
