| Groningen to Opwijk | 185.46 mi (298.47 km) |
| Groningen to Ostend | 206.73 mi (332.70 km) |
| Groningen to Oud-Heverlee | 183.41 mi (295.16 km) |
| Groningen to Oud-Turnhout | 147.36 mi (237.15 km) |
| Groningen to Oudenaarde | 206.46 mi (332.27 km) |
| Groningen to Oudenburg | 206.24 mi (331.91 km) |
| Groningen to Oupeye | 177.71 mi (286.00 km) |
| Groningen to Overijse | 189.06 mi (304.26 km) |
| Groningen to Overpelt | 146.51 mi (235.78 km) |
| Groningen to Paal | 161.64 mi (260.14 km) |
| Groningen to Peer | 151.51 mi (243.83 km) |
| Groningen to Pepinster | 185.87 mi (299.12 km) |
| Groningen to Peruwelz | 225.80 mi (363.38 km) |
| Groningen to Perwez | 194.05 mi (312.29 km) |
| Groningen to Philippeville | 225.59 mi (363.05 km) |
