| Greentree to Octeville | 3,513.54 mi (5,654.49 km) |
| Greentree to Oignies | 3,687.60 mi (5,934.61 km) |
| Greentree to Oissel | 3,635.79 mi (5,851.24 km) |
| Greentree to Olivet | 3,707.19 mi (5,966.15 km) |
| Greentree to Ollioules | 4,016.27 mi (6,463.56 km) |
| Greentree to Olonne-sur-Mer | 3,580.12 mi (5,761.64 km) |
| Greentree to Oloron-Sainte-Marie | 3,720.78 mi (5,988.02 km) |
| Greentree to Onet Village | 3,833.24 mi (6,169.00 km) |
| Greentree to Onnaing | 3,714.45 mi (5,977.83 km) |
| Greentree to Orange | 3,939.15 mi (6,339.45 km) |
| Greentree to Orchies | 3,697.76 mi (5,950.97 km) |
| Greentree to Orleans | 3,706.56 mi (5,965.13 km) |
| Greentree to Orly | 3,705.63 mi (5,963.64 km) |
| Greentree to Ormesson-sur-Marne | 3,710.73 mi (5,971.84 km) |
| Greentree to Orsay | 3,698.10 mi (5,951.51 km) |
