| Gelves to Octeville | 876.85 mi (1,411.16 km) |
| Gelves to Oignies | 1,010.65 mi (1,626.49 km) |
| Gelves to Oissel | 902.34 mi (1,452.18 km) |
| Gelves to Olivet | 830.55 mi (1,336.63 km) |
| Gelves to Ollioules | 742.19 mi (1,194.44 km) |
| Gelves to Olonne-sur-Mer | 671.96 mi (1,081.41 km) |
| Gelves to Oloron-Sainte-Marie | 495.07 mi (796.74 km) |
| Gelves to Onet Village | 661.52 mi (1,064.61 km) |
| Gelves to Onnaing | 1,019.31 mi (1,640.42 km) |
| Gelves to Orange | 735.33 mi (1,183.40 km) |
| Gelves to Orchies | 1,016.48 mi (1,635.86 km) |
| Gelves to Orleans | 833.02 mi (1,340.62 km) |
| Gelves to Orly | 894.21 mi (1,439.09 km) |
| Gelves to Ormesson-sur-Marne | 900.14 mi (1,448.63 km) |
| Gelves to Orsay | 886.68 mi (1,426.97 km) |
