| Guyancourt to Oignies | 124.32 mi (200.07 km) |
| Guyancourt to Oissel | 59.44 mi (95.65 km) |
| Guyancourt to Olivet | 63.21 mi (101.72 km) |
| Guyancourt to Ollioules | 429.13 mi (690.62 km) |
| Guyancourt to Olonne-sur-Mer | 236.39 mi (380.43 km) |
| Guyancourt to Oloron-Sainte-Marie | 406.20 mi (653.72 km) |
| Guyancourt to Onet Village | 305.41 mi (491.51 km) |
| Guyancourt to Onnaing | 130.90 mi (210.66 km) |
| Guyancourt to Orange | 345.53 mi (556.08 km) |
| Guyancourt to Orchies | 128.81 mi (207.31 km) |
| Guyancourt to Orleans | 60.51 mi (97.38 km) |
| Guyancourt to Orly | 14.65 mi (23.58 km) |
| Guyancourt to Ormesson-sur-Marne | 21.17 mi (34.07 km) |
| Guyancourt to Orsay | 7.24 mi (11.66 km) |
| Guyancourt to Orthez | 389.55 mi (626.92 km) |
