| Marbach am Neckar to Opwijk | 265.39 mi (427.11 km) |
| Marbach am Neckar to Ostend | 322.14 mi (518.43 km) |
| Marbach am Neckar to Oud-Heverlee | 242.56 mi (390.37 km) |
| Marbach am Neckar to Oud-Turnhout | 250.60 mi (403.31 km) |
| Marbach am Neckar to Oudenaarde | 284.12 mi (457.25 km) |
| Marbach am Neckar to Oudenburg | 317.70 mi (511.29 km) |
| Marbach am Neckar to Oupeye | 202.18 mi (325.38 km) |
| Marbach am Neckar to Overijse | 245.85 mi (395.66 km) |
| Marbach am Neckar to Overpelt | 231.86 mi (373.14 km) |
| Marbach am Neckar to Paal | 232.28 mi (373.81 km) |
| Marbach am Neckar to Peer | 226.85 mi (365.08 km) |
| Marbach am Neckar to Pepinster | 190.31 mi (306.27 km) |
| Marbach am Neckar to Peruwelz | 275.65 mi (443.61 km) |
| Marbach am Neckar to Perwez | 229.73 mi (369.71 km) |
| Marbach am Neckar to Philippeville | 228.02 mi (366.97 km) |
