| Mechernich to Oegstgeest | 144.31 mi (232.24 km) |
| Mechernich to Oirschot | 85.47 mi (137.55 km) |
| Mechernich to Oisterwijk | 92.60 mi (149.02 km) |
| Mechernich to Oldebroek | 131.82 mi (212.15 km) |
| Mechernich to Oldenzaal | 119.24 mi (191.89 km) |
| Mechernich to Ommen | 132.81 mi (213.74 km) |
| Mechernich to Oosterend | 167.93 mi (270.26 km) |
| Mechernich to Oosterhout | 106.02 mi (170.62 km) |
| Mechernich to Oosterwolde | 165.86 mi (266.93 km) |
| Mechernich to Oostzaan | 147.69 mi (237.68 km) |
| Mechernich to Opmeer | 162.36 mi (261.29 km) |
| Mechernich to Oss | 94.38 mi (151.88 km) |
| Mechernich to Oud-Beijerland | 128.65 mi (207.04 km) |
| Mechernich to Oudenbosch | 114.81 mi (184.77 km) |
| Mechernich to Oudewater | 124.55 mi (200.44 km) |
