| Gretz-Armainvilliers to Oignies | 119.96 mi (193.06 km) |
| Gretz-Armainvilliers to Oissel | 85.20 mi (137.11 km) |
| Gretz-Armainvilliers to Olivet | 71.70 mi (115.39 km) |
| Gretz-Armainvilliers to Ollioules | 414.84 mi (667.62 km) |
| Gretz-Armainvilliers to Olonne-sur-Mer | 259.23 mi (417.19 km) |
| Gretz-Armainvilliers to Oloron-Sainte-Marie | 415.38 mi (668.48 km) |
| Gretz-Armainvilliers to Onet Village | 302.39 mi (486.65 km) |
| Gretz-Armainvilliers to Onnaing | 120.18 mi (193.41 km) |
| Gretz-Armainvilliers to Orange | 332.99 mi (535.89 km) |
| Gretz-Armainvilliers to Orchies | 121.94 mi (196.24 km) |
| Gretz-Armainvilliers to Orleans | 69.24 mi (111.43 km) |
| Gretz-Armainvilliers to Orly | 15.56 mi (25.04 km) |
| Gretz-Armainvilliers to Ormesson-sur-Marne | 9.44 mi (15.19 km) |
| Gretz-Armainvilliers to Orsay | 25.10 mi (40.39 km) |
| Gretz-Armainvilliers to Orthez | 399.78 mi (643.39 km) |
