| Merksplas to Oignies | 102.48 mi (164.92 km) |
| Merksplas to Oissel | 217.37 mi (349.82 km) |
| Merksplas to Olivet | 276.00 mi (444.17 km) |
| Merksplas to Ollioules | 570.29 mi (917.80 km) |
| Merksplas to Olonne-sur-Mer | 449.25 mi (723.00 km) |
| Merksplas to Oloron-Sainte-Marie | 619.79 mi (997.45 km) |
| Merksplas to Onet Village | 495.01 mi (796.63 km) |
| Merksplas to Onnaing | 87.37 mi (140.60 km) |
| Merksplas to Orange | 499.44 mi (803.77 km) |
| Merksplas to Orchies | 93.76 mi (150.90 km) |
| Merksplas to Orleans | 273.46 mi (440.08 km) |
| Merksplas to Orly | 211.83 mi (340.91 km) |
| Merksplas to Ormesson-sur-Marne | 206.03 mi (331.57 km) |
| Merksplas to Orsay | 219.37 mi (353.03 km) |
| Merksplas to Orthez | 604.35 mi (972.60 km) |
