| Dumont to Octeville | 3,429.63 mi (5,519.45 km) |
| Dumont to Oignies | 3,602.63 mi (5,797.87 km) |
| Dumont to Oissel | 3,551.67 mi (5,715.86 km) |
| Dumont to Olivet | 3,623.81 mi (5,831.96 km) |
| Dumont to Ollioules | 3,935.03 mi (6,332.82 km) |
| Dumont to Olonne-sur-Mer | 3,498.23 mi (5,629.86 km) |
| Dumont to Oloron-Sainte-Marie | 3,641.09 mi (5,859.78 km) |
| Dumont to Onet Village | 3,751.95 mi (6,038.18 km) |
| Dumont to Onnaing | 3,629.45 mi (5,841.03 km) |
| Dumont to Orange | 3,857.51 mi (6,208.07 km) |
| Dumont to Orchies | 3,612.75 mi (5,814.17 km) |
| Dumont to Orleans | 3,623.15 mi (5,830.90 km) |
| Dumont to Orly | 3,621.66 mi (5,828.51 km) |
| Dumont to Ormesson-sur-Marne | 3,626.71 mi (5,836.63 km) |
| Dumont to Orsay | 3,614.18 mi (5,816.47 km) |
