| Genc to Octeville | 2,188.08 mi (3,521.38 km) |
| Genc to Oignies | 1,990.37 mi (3,203.19 km) |
| Genc to Oissel | 2,064.14 mi (3,321.91 km) |
| Genc to Olivet | 2,018.95 mi (3,249.18 km) |
| Genc to Ollioules | 1,823.26 mi (2,934.25 km) |
| Genc to Olonne-sur-Mer | 2,189.46 mi (3,523.60 km) |
| Genc to Oloron-Sainte-Marie | 2,147.26 mi (3,455.67 km) |
| Genc to Onet Village | 1,982.25 mi (3,190.12 km) |
| Genc to Onnaing | 1,963.20 mi (3,159.46 km) |
| Genc to Orange | 1,873.05 mi (3,014.38 km) |
| Genc to Orchies | 1,979.56 mi (3,185.80 km) |
| Genc to Orleans | 2,018.73 mi (3,248.84 km) |
| Genc to Orly | 2,001.40 mi (3,220.94 km) |
| Genc to Ormesson-sur-Marne | 1,995.10 mi (3,210.81 km) |
| Genc to Orsay | 2,010.41 mi (3,235.44 km) |
