| Castelginest to Oignies | 473.84 mi (762.58 km) |
| Castelginest to Oissel | 390.60 mi (628.60 km) |
| Castelginest to Olivet | 289.02 mi (465.13 km) |
| Castelginest to Ollioules | 224.79 mi (361.76 km) |
| Castelginest to Olonne-sur-Mer | 250.95 mi (403.87 km) |
| Castelginest to Oloron-Sainte-Marie | 107.97 mi (173.76 km) |
| Castelginest to Onet Village | 74.03 mi (119.14 km) |
| Castelginest to Onnaing | 473.57 mi (762.14 km) |
| Castelginest to Orange | 170.85 mi (274.95 km) |
| Castelginest to Orchies | 476.18 mi (766.33 km) |
| Castelginest to Orleans | 291.71 mi (469.46 km) |
| Castelginest to Orly | 351.94 mi (566.39 km) |
| Castelginest to Ormesson-sur-Marne | 355.77 mi (572.56 km) |
| Castelginest to Orsay | 347.65 mi (559.49 km) |
| Castelginest to Orthez | 111.18 mi (178.93 km) |
