| Gross-Umstadt to Opwijk | 222.46 mi (358.01 km) |
| Gross-Umstadt to Ostend | 280.15 mi (450.85 km) |
| Gross-Umstadt to Oud-Heverlee | 199.58 mi (321.19 km) |
| Gross-Umstadt to Oud-Turnhout | 200.10 mi (322.03 km) |
| Gross-Umstadt to Oudenaarde | 244.65 mi (393.73 km) |
| Gross-Umstadt to Oudenburg | 275.95 mi (444.10 km) |
| Gross-Umstadt to Oupeye | 156.44 mi (251.77 km) |
| Gross-Umstadt to Overijse | 204.12 mi (328.51 km) |
| Gross-Umstadt to Overpelt | 180.37 mi (290.28 km) |
| Gross-Umstadt to Paal | 184.17 mi (296.40 km) |
| Gross-Umstadt to Peer | 176.15 mi (283.49 km) |
| Gross-Umstadt to Pepinster | 146.02 mi (234.99 km) |
| Gross-Umstadt to Peruwelz | 240.82 mi (387.57 km) |
| Gross-Umstadt to Perwez | 189.31 mi (304.67 km) |
| Gross-Umstadt to Philippeville | 195.87 mi (315.22 km) |
