| Cities | Distance |
|---|
| Halden to Opwijk | 632.66 mi (1,018.16 km) |
| Halden to Ostend | 640.86 mi (1,031.36 km) |
| Halden to Oud-Heverlee | 632.77 mi (1,018.35 km) |
| Halden to Oud-Turnhout | 596.66 mi (960.23 km) |
| Halden to Oudenaarde | 650.65 mi (1,047.12 km) |
| Halden to Oudenburg | 641.80 mi (1,032.88 km) |
| Halden to Oupeye | 625.59 mi (1,006.79 km) |
| Halden to Overijse | 638.20 mi (1,027.09 km) |
| Halden to Overpelt | 596.05 mi (959.25 km) |
| Halden to Paal | 611.32 mi (983.83 km) |
| Halden to Peer | 600.89 mi (967.04 km) |
| Halden to Pepinster | 632.37 mi (1,017.70 km) |
| Halden to Peruwelz | 671.82 mi (1,081.18 km) |
| Halden to Perwez | 643.74 mi (1,035.99 km) |
| Halden to Philippeville | 675.28 mi (1,086.75 km) |
