| Four Corners to Octeville | 5,013.95 mi (8,069.17 km) |
| Four Corners to Oignies | 5,094.75 mi (8,199.21 km) |
| Four Corners to Oissel | 5,105.74 mi (8,216.89 km) |
| Four Corners to Olivet | 5,209.40 mi (8,383.72 km) |
| Four Corners to Ollioules | 5,586.06 mi (8,989.90 km) |
| Four Corners to Olonne-sur-Mer | 5,175.95 mi (8,329.88 km) |
| Four Corners to Oloron-Sainte-Marie | 5,392.62 mi (8,678.58 km) |
| Four Corners to Onet Village | 5,423.58 mi (8,728.41 km) |
| Four Corners to Onnaing | 5,115.08 mi (8,231.93 km) |
| Four Corners to Orange | 5,499.82 mi (8,851.11 km) |
| Four Corners to Orchies | 5,101.01 mi (8,209.28 km) |
| Four Corners to Orleans | 5,207.50 mi (8,380.66 km) |
| Four Corners to Orly | 5,174.27 mi (8,327.18 km) |
| Four Corners to Ormesson-sur-Marne | 5,175.91 mi (8,329.82 km) |
| Four Corners to Orsay | 5,171.20 mi (8,322.24 km) |
