| Macomb to Octeville | 4,132.97 mi (6,651.38 km) |
| Macomb to Oignies | 4,283.30 mi (6,893.30 km) |
| Macomb to Oissel | 4,249.69 mi (6,839.22 km) |
| Macomb to Olivet | 4,333.58 mi (6,974.23 km) |
| Macomb to Ollioules | 4,672.26 mi (7,519.28 km) |
| Macomb to Olonne-sur-Mer | 4,231.61 mi (6,810.11 km) |
| Macomb to Oloron-Sainte-Marie | 4,399.13 mi (7,079.72 km) |
| Macomb to Onet Village | 4,490.34 mi (7,226.51 km) |
| Macomb to Onnaing | 4,309.02 mi (6,934.69 km) |
| Macomb to Orange | 4,590.31 mi (7,387.40 km) |
| Macomb to Orchies | 4,292.57 mi (6,908.23 km) |
| Macomb to Orleans | 4,332.53 mi (6,972.54 km) |
| Macomb to Orly | 4,321.46 mi (6,954.71 km) |
| Macomb to Ormesson-sur-Marne | 4,325.63 mi (6,961.43 km) |
| Macomb to Orsay | 4,315.08 mi (6,944.44 km) |
