| Simpelveld to Octeville | 347.06 mi (558.54 km) |
| Simpelveld to Oignies | 133.36 mi (214.62 km) |
| Simpelveld to Oissel | 240.04 mi (386.30 km) |
| Simpelveld to Olivet | 275.35 mi (443.13 km) |
| Simpelveld to Ollioules | 531.64 mi (855.58 km) |
| Simpelveld to Olonne-sur-Mer | 461.45 mi (742.63 km) |
| Simpelveld to Oloron-Sainte-Marie | 611.78 mi (984.56 km) |
| Simpelveld to Onet Village | 473.83 mi (762.55 km) |
| Simpelveld to Onnaing | 109.01 mi (175.44 km) |
| Simpelveld to Orange | 465.80 mi (749.63 km) |
| Simpelveld to Orchies | 122.51 mi (197.16 km) |
| Simpelveld to Orleans | 273.07 mi (439.46 km) |
| Simpelveld to Orly | 215.58 mi (346.94 km) |
| Simpelveld to Ormesson-sur-Marne | 208.78 mi (336.01 km) |
| Simpelveld to Orsay | 224.58 mi (361.43 km) |
