| Cities | Distance |
|---|---|
| Heiloo to Oegstgeest | 30.66 mi (49.34 km) |
| Heiloo to Oirschot | 79.94 mi (128.65 km) |
| Heiloo to Oisterwijk | 73.18 mi (117.77 km) |
| Heiloo to Oldebroek | 50.81 mi (81.77 km) |
| Heiloo to Oldenzaal | 95.35 mi (153.45 km) |
| Heiloo to Ommen | 71.64 mi (115.29 km) |
| Heiloo to Oosterend | 62.90 mi (101.22 km) |
| Heiloo to Oosterhout | 66.38 mi (106.83 km) |
| Heiloo to Oosterwolde | 71.10 mi (114.42 km) |
| Heiloo to Oostzaan | 13.48 mi (21.69 km) |
| Heiloo to Opmeer | 11.97 mi (19.27 km) |
| Heiloo to Oss | 66.81 mi (107.52 km) |
| Heiloo to Oud-Beijerland | 55.76 mi (89.73 km) |
| Heiloo to Oudenbosch | 70.32 mi (113.16 km) |
| Heiloo to Oudewater | 40.80 mi (65.66 km) |