| Heidenheim to Opwijk | 309.53 mi (498.14 km) |
| Heidenheim to Ostend | 366.50 mi (589.83 km) |
| Heidenheim to Oud-Heverlee | 286.63 mi (461.29 km) |
| Heidenheim to Oud-Turnhout | 293.20 mi (471.87 km) |
| Heidenheim to Oudenaarde | 328.67 mi (528.95 km) |
| Heidenheim to Oudenburg | 362.08 mi (582.71 km) |
| Heidenheim to Oupeye | 245.64 mi (395.32 km) |
| Heidenheim to Overijse | 290.10 mi (466.86 km) |
| Heidenheim to Overpelt | 274.10 mi (441.13 km) |
| Heidenheim to Paal | 275.40 mi (443.21 km) |
| Heidenheim to Peer | 269.30 mi (433.40 km) |
| Heidenheim to Pepinster | 233.95 mi (376.51 km) |
| Heidenheim to Peruwelz | 320.44 mi (515.70 km) |
| Heidenheim to Perwez | 274.07 mi (441.08 km) |
| Heidenheim to Philippeville | 272.84 mi (439.09 km) |
