| Hollabrunn to Oignies | 600.83 mi (966.94 km) |
| Hollabrunn to Oissel | 681.17 mi (1,096.24 km) |
| Hollabrunn to Olivet | 653.82 mi (1,052.22 km) |
| Hollabrunn to Ollioules | 618.22 mi (994.92 km) |
| Hollabrunn to Olonne-sur-Mer | 842.41 mi (1,355.72 km) |
| Hollabrunn to Oloron-Sainte-Marie | 882.00 mi (1,419.44 km) |
| Hollabrunn to Onet Village | 703.27 mi (1,131.81 km) |
| Hollabrunn to Onnaing | 573.71 mi (923.29 km) |
| Hollabrunn to Orange | 617.71 mi (994.10 km) |
| Hollabrunn to Orchies | 589.96 mi (949.45 km) |
| Hollabrunn to Orleans | 653.00 mi (1,050.90 km) |
| Hollabrunn to Orly | 624.14 mi (1,004.46 km) |
| Hollabrunn to Ormesson-sur-Marne | 617.34 mi (993.51 km) |
| Hollabrunn to Orsay | 633.71 mi (1,019.86 km) |
| Hollabrunn to Orthez | 878.98 mi (1,414.58 km) |
