| Guadarrama to Octeville | 629.95 mi (1,013.81 km) |
| Guadarrama to Oignies | 757.78 mi (1,219.54 km) |
| Guadarrama to Oissel | 649.85 mi (1,045.83 km) |
| Guadarrama to Olivet | 578.10 mi (930.36 km) |
| Guadarrama to Ollioules | 538.19 mi (866.14 km) |
| Guadarrama to Olonne-sur-Mer | 421.31 mi (678.03 km) |
| Guadarrama to Oloron-Sainte-Marie | 249.73 mi (401.90 km) |
| Guadarrama to Onet Village | 425.10 mi (684.13 km) |
| Guadarrama to Onnaing | 766.50 mi (1,233.57 km) |
| Guadarrama to Orange | 512.86 mi (825.37 km) |
| Guadarrama to Orchies | 763.61 mi (1,228.90 km) |
| Guadarrama to Orleans | 580.55 mi (934.31 km) |
| Guadarrama to Orly | 641.54 mi (1,032.46 km) |
| Guadarrama to Ormesson-sur-Marne | 647.53 mi (1,042.09 km) |
| Guadarrama to Orsay | 633.93 mi (1,020.21 km) |
