| Oliveira do Hospital to Octeville | 708.21 mi (1,139.75 km) |
| Oliveira do Hospital to Oignies | 872.84 mi (1,404.71 km) |
| Oliveira do Hospital to Oissel | 758.83 mi (1,221.23 km) |
| Oliveira do Hospital to Olivet | 708.45 mi (1,140.15 km) |
| Oliveira do Hospital to Ollioules | 731.39 mi (1,177.06 km) |
| Oliveira do Hospital to Olonne-sur-Mer | 524.50 mi (844.10 km) |
| Oliveira do Hospital to Oloron-Sainte-Marie | 421.87 mi (678.93 km) |
| Oliveira do Hospital to Onet Village | 600.69 mi (966.72 km) |
| Oliveira do Hospital to Onnaing | 886.47 mi (1,426.64 km) |
| Oliveira do Hospital to Orange | 697.82 mi (1,123.03 km) |
| Oliveira do Hospital to Orchies | 880.41 mi (1,416.89 km) |
| Oliveira do Hospital to Orleans | 710.57 mi (1,143.56 km) |
| Oliveira do Hospital to Orly | 767.14 mi (1,234.58 km) |
| Oliveira do Hospital to Ormesson-sur-Marne | 773.86 mi (1,245.42 km) |
| Oliveira do Hospital to Orsay | 758.32 mi (1,220.39 km) |
