| Olbia to Octeville | 808.08 mi (1,300.48 km) |
| Olbia to Oignies | 730.22 mi (1,175.17 km) |
| Olbia to Oissel | 710.99 mi (1,144.22 km) |
| Olbia to Olivet | 608.62 mi (979.48 km) |
| Olbia to Ollioules | 242.32 mi (389.97 km) |
| Olbia to Olonne-sur-Mer | 682.72 mi (1,098.74 km) |
| Olbia to Oloron-Sainte-Marie | 541.44 mi (871.37 km) |
| Olbia to Onet Village | 424.03 mi (682.41 km) |
| Olbia to Onnaing | 713.21 mi (1,147.80 km) |
| Olbia to Orange | 326.37 mi (525.24 km) |
| Olbia to Orchies | 725.49 mi (1,167.57 km) |
| Olbia to Orleans | 610.39 mi (982.33 km) |
| Olbia to Orly | 642.60 mi (1,034.16 km) |
| Olbia to Ormesson-sur-Marne | 641.17 mi (1,031.86 km) |
| Olbia to Orsay | 645.51 mi (1,038.85 km) |
