| Middelkerke to Oegstgeest | 98.69 mi (158.83 km) |
| Middelkerke to Oirschot | 109.26 mi (175.84 km) |
| Middelkerke to Oisterwijk | 106.29 mi (171.05 km) |
| Middelkerke to Oldebroek | 157.96 mi (254.21 km) |
| Middelkerke to Oldenzaal | 192.54 mi (309.86 km) |
| Middelkerke to Ommen | 178.98 mi (288.04 km) |
| Middelkerke to Oosterend | 186.50 mi (300.14 km) |
| Middelkerke to Oosterhout | 93.34 mi (150.22 km) |
| Middelkerke to Oosterwolde | 193.08 mi (310.73 km) |
| Middelkerke to Oostzaan | 123.35 mi (198.51 km) |
| Middelkerke to Opmeer | 138.55 mi (222.97 km) |
| Middelkerke to Oss | 122.84 mi (197.70 km) |
| Middelkerke to Oud-Beijerland | 80.80 mi (130.04 km) |
| Middelkerke to Oudenbosch | 78.64 mi (126.55 km) |
| Middelkerke to Oudewater | 105.00 mi (168.98 km) |
