| Gardelegen to Oegstgeest | 293.12 mi (471.72 km) |
| Gardelegen to Oirschot | 268.52 mi (432.15 km) |
| Gardelegen to Oisterwijk | 270.95 mi (436.05 km) |
| Gardelegen to Oldebroek | 231.09 mi (371.90 km) |
| Gardelegen to Oldenzaal | 188.42 mi (303.24 km) |
| Gardelegen to Ommen | 209.15 mi (336.59 km) |
| Gardelegen to Oosterend | 225.04 mi (362.17 km) |
| Gardelegen to Oosterhout | 284.01 mi (457.07 km) |
| Gardelegen to Oosterwolde | 215.64 mi (347.04 km) |
| Gardelegen to Oostzaan | 273.89 mi (440.79 km) |
| Gardelegen to Opmeer | 270.46 mi (435.26 km) |
| Gardelegen to Oss | 254.52 mi (409.61 km) |
| Gardelegen to Oud-Beijerland | 300.21 mi (483.14 km) |
| Gardelegen to Oudenbosch | 298.77 mi (480.83 km) |
| Gardelegen to Oudewater | 278.05 mi (447.48 km) |
