| Conneaut to Octeville | 3,662.87 mi (5,894.83 km) |
| Conneaut to Oignies | 3,824.80 mi (6,155.43 km) |
| Conneaut to Oissel | 3,782.56 mi (6,087.44 km) |
| Conneaut to Olivet | 3,860.99 mi (6,213.67 km) |
| Conneaut to Ollioules | 4,187.37 mi (6,738.92 km) |
| Conneaut to Olonne-sur-Mer | 3,747.47 mi (6,030.97 km) |
| Conneaut to Oloron-Sainte-Marie | 3,903.94 mi (6,282.79 km) |
| Conneaut to Onet Village | 4,004.48 mi (6,444.59 km) |
| Conneaut to Onnaing | 3,851.16 mi (6,197.84 km) |
| Conneaut to Orange | 4,107.34 mi (6,610.13 km) |
| Conneaut to Orchies | 3,834.53 mi (6,171.09 km) |
| Conneaut to Orleans | 3,860.13 mi (6,212.28 km) |
| Conneaut to Orly | 3,853.68 mi (6,201.90 km) |
| Conneaut to Ormesson-sur-Marne | 3,858.29 mi (6,209.32 km) |
| Conneaut to Orsay | 3,846.74 mi (6,190.74 km) |
