| Welver to Octeville | 442.38 mi (711.94 km) |
| Welver to Oignies | 229.73 mi (369.71 km) |
| Welver to Oissel | 340.19 mi (547.49 km) |
| Welver to Olivet | 374.46 mi (602.64 km) |
| Welver to Ollioules | 593.93 mi (955.83 km) |
| Welver to Olonne-sur-Mer | 562.41 mi (905.11 km) |
| Welver to Oloron-Sainte-Marie | 705.40 mi (1,135.24 km) |
| Welver to Onet Village | 558.69 mi (899.12 km) |
| Welver to Onnaing | 207.68 mi (334.23 km) |
| Welver to Orange | 536.78 mi (863.86 km) |
| Welver to Orchies | 219.40 mi (353.09 km) |
| Welver to Orleans | 372.27 mi (599.12 km) |
| Welver to Orly | 316.14 mi (508.77 km) |
| Welver to Ormesson-sur-Marne | 309.24 mi (497.67 km) |
| Welver to Orsay | 325.29 mi (523.51 km) |
