| Cities | Distance |
|---|---|
| Ostend to Oegstgeest | 93.62 mi (150.67 km) |
| Ostend to Oirschot | 104.43 mi (168.06 km) |
| Ostend to Oisterwijk | 101.35 mi (163.11 km) |
| Ostend to Oldebroek | 152.78 mi (245.87 km) |
| Ostend to Oldenzaal | 187.40 mi (301.60 km) |
| Ostend to Ommen | 173.80 mi (279.70 km) |
| Ostend to Oosterend | 181.40 mi (291.93 km) |
| Ostend to Oosterhout | 88.29 mi (142.09 km) |
| Ostend to Oosterwolde | 187.95 mi (302.48 km) |
| Ostend to Oostzaan | 118.28 mi (190.36 km) |
| Ostend to Opmeer | 133.59 mi (214.99 km) |
| Ostend to Oss | 117.80 mi (189.58 km) |
| Ostend to Oud-Beijerland | 75.62 mi (121.70 km) |
| Ostend to Oudenbosch | 73.57 mi (118.40 km) |
| Ostend to Oudewater | 99.81 mi (160.64 km) |