| Gennep to Octeville | 362.53 mi (583.44 km) |
| Gennep to Oignies | 154.52 mi (248.68 km) |
| Gennep to Oissel | 269.00 mi (432.92 km) |
| Gennep to Olivet | 321.07 mi (516.71 km) |
| Gennep to Ollioules | 591.51 mi (951.94 km) |
| Gennep to Olonne-sur-Mer | 499.27 mi (803.50 km) |
| Gennep to Oloron-Sainte-Marie | 662.48 mi (1,066.15 km) |
| Gennep to Onet Village | 530.03 mi (853.00 km) |
| Gennep to Onnaing | 137.13 mi (220.68 km) |
| Gennep to Orange | 525.18 mi (845.20 km) |
| Gennep to Orchies | 145.34 mi (233.90 km) |
| Gennep to Orleans | 318.62 mi (512.77 km) |
| Gennep to Orly | 258.15 mi (415.46 km) |
| Gennep to Ormesson-sur-Marne | 251.92 mi (405.42 km) |
| Gennep to Orsay | 266.30 mi (428.57 km) |
