| Allen Park to Octeville | 3,756.19 mi (6,045.00 km) |
| Allen Park to Oignies | 3,913.60 mi (6,298.34 km) |
| Allen Park to Oissel | 3,874.76 mi (6,235.82 km) |
| Allen Park to Olivet | 3,955.46 mi (6,365.70 km) |
| Allen Park to Ollioules | 4,287.18 mi (6,899.55 km) |
| Allen Park to Olonne-sur-Mer | 3,846.72 mi (6,190.70 km) |
| Allen Park to Oloron-Sainte-Marie | 4,008.17 mi (6,450.52 km) |
| Allen Park to Onet Village | 4,104.62 mi (6,605.74 km) |
| Allen Park to Onnaing | 3,939.73 mi (6,340.38 km) |
| Allen Park to Orange | 4,206.29 mi (6,769.37 km) |
| Allen Park to Orchies | 3,923.16 mi (6,313.72 km) |
| Allen Park to Orleans | 3,954.52 mi (6,364.19 km) |
| Allen Park to Orly | 3,946.19 mi (6,350.78 km) |
| Allen Park to Ormesson-sur-Marne | 3,950.63 mi (6,357.93 km) |
| Allen Park to Orsay | 3,939.47 mi (6,339.97 km) |
