| Marly to Oignies | 25.63 mi (41.25 km) |
| Marly to Oissel | 129.54 mi (208.48 km) |
| Marly to Olivet | 187.09 mi (301.09 km) |
| Marly to Ollioules | 509.85 mi (820.53 km) |
| Marly to Olonne-sur-Mer | 358.69 mi (577.26 km) |
| Marly to Oloron-Sainte-Marie | 531.72 mi (855.73 km) |
| Marly to Onet Village | 415.78 mi (669.14 km) |
| Marly to Onnaing | 3.59 mi (5.77 km) |
| Marly to Orange | 433.18 mi (697.13 km) |
| Marly to Orchies | 15.81 mi (25.45 km) |
| Marly to Orleans | 184.48 mi (296.89 km) |
| Marly to Orly | 122.32 mi (196.85 km) |
| Marly to Ormesson-sur-Marne | 117.03 mi (188.33 km) |
| Marly to Orsay | 129.27 mi (208.04 km) |
| Marly to Orthez | 515.70 mi (829.94 km) |
