| Cities | Distance |
|---|---|
| Herdecke to Opwijk | 143.89 mi (231.57 km) |
| Herdecke to Ostend | 195.29 mi (314.28 km) |
| Herdecke to Oud-Heverlee | 126.21 mi (203.12 km) |
| Herdecke to Oud-Turnhout | 105.86 mi (170.36 km) |
| Herdecke to Oudenaarde | 170.50 mi (274.39 km) |
| Herdecke to Oudenburg | 192.11 mi (309.17 km) |
| Herdecke to Oupeye | 91.26 mi (146.87 km) |
| Herdecke to Overijse | 132.85 mi (213.81 km) |
| Herdecke to Overpelt | 88.01 mi (141.65 km) |
| Herdecke to Paal | 100.95 mi (162.46 km) |
| Herdecke to Peer | 87.55 mi (140.90 km) |
| Herdecke to Pepinster | 90.88 mi (146.25 km) |
| Herdecke to Peruwelz | 178.30 mi (286.94 km) |
| Herdecke to Perwez | 125.80 mi (202.46 km) |
| Herdecke to Philippeville | 150.74 mi (242.59 km) |