| Hilliard to Octeville | 3,849.85 mi (6,195.73 km) |
| Hilliard to Oignies | 4,012.43 mi (6,457.38 km) |
| Hilliard to Oissel | 3,969.72 mi (6,388.64 km) |
| Hilliard to Olivet | 4,047.71 mi (6,514.16 km) |
| Hilliard to Ollioules | 4,372.58 mi (7,036.99 km) |
| Hilliard to Olonne-sur-Mer | 3,932.94 mi (6,329.46 km) |
| Hilliard to Oloron-Sainte-Marie | 4,087.49 mi (6,578.17 km) |
| Hilliard to Onet Village | 4,189.62 mi (6,742.54 km) |
| Hilliard to Onnaing | 4,038.80 mi (6,499.82 km) |
| Hilliard to Orange | 4,292.85 mi (6,908.67 km) |
| Hilliard to Orchies | 4,022.17 mi (6,473.06 km) |
| Hilliard to Orleans | 4,046.86 mi (6,512.80 km) |
| Hilliard to Orly | 4,040.78 mi (6,503.01 km) |
| Hilliard to Ormesson-sur-Marne | 4,045.43 mi (6,510.48 km) |
| Hilliard to Orsay | 4,033.81 mi (6,491.79 km) |
