| Hardinxveld-Giessendam to Oegstgeest | 29.75 mi (47.87 km) |
| Hardinxveld-Giessendam to Oirschot | 29.65 mi (47.71 km) |
| Hardinxveld-Giessendam to Oisterwijk | 22.51 mi (36.22 km) |
| Hardinxveld-Giessendam to Oldebroek | 62.94 mi (101.29 km) |
| Hardinxveld-Giessendam to Oldenzaal | 95.65 mi (153.93 km) |
| Hardinxveld-Giessendam to Ommen | 82.71 mi (133.12 km) |
| Hardinxveld-Giessendam to Oosterend | 97.09 mi (156.24 km) |
| Hardinxveld-Giessendam to Oosterhout | 12.04 mi (19.37 km) |
| Hardinxveld-Giessendam to Oosterwolde | 101.75 mi (163.74 km) |
| Hardinxveld-Giessendam to Oostzaan | 42.66 mi (68.65 km) |
| Hardinxveld-Giessendam to Opmeer | 61.23 mi (98.54 km) |
| Hardinxveld-Giessendam to Oss | 29.41 mi (47.33 km) |
| Hardinxveld-Giessendam to Oud-Beijerland | 18.51 mi (29.78 km) |
| Hardinxveld-Giessendam to Oudenbosch | 20.56 mi (33.08 km) |
| Hardinxveld-Giessendam to Oudewater | 13.89 mi (22.36 km) |
