| North Royalton to Octeville | 3,736.89 mi (6,013.94 km) |
| North Royalton to Oignies | 3,898.60 mi (6,274.19 km) |
| North Royalton to Oissel | 3,856.53 mi (6,206.48 km) |
| North Royalton to Olivet | 3,935.04 mi (6,332.84 km) |
| North Royalton to Ollioules | 4,261.45 mi (6,858.14 km) |
| North Royalton to Olonne-sur-Mer | 3,821.56 mi (6,150.21 km) |
| North Royalton to Oloron-Sainte-Marie | 3,977.87 mi (6,401.76 km) |
| North Royalton to Onet Village | 4,078.56 mi (6,563.81 km) |
| North Royalton to Onnaing | 3,924.94 mi (6,316.58 km) |
| North Royalton to Orange | 4,181.43 mi (6,729.37 km) |
| North Royalton to Orchies | 3,908.32 mi (6,289.83 km) |
| North Royalton to Orleans | 3,934.18 mi (6,331.45 km) |
| North Royalton to Orly | 3,927.67 mi (6,320.97 km) |
| North Royalton to Ormesson-sur-Marne | 3,932.27 mi (6,328.38 km) |
| North Royalton to Orsay | 3,920.74 mi (6,309.82 km) |
