| Cities | Distance |
|---|---|
| Harnes to Opwijk | 66.51 mi (107.04 km) |
| Harnes to Ostend | 53.95 mi (86.83 km) |
| Harnes to Oud-Heverlee | 81.69 mi (131.47 km) |
| Harnes to Oud-Turnhout | 108.76 mi (175.03 km) |
| Harnes to Oudenaarde | 41.33 mi (66.51 km) |
| Harnes to Oudenburg | 51.18 mi (82.36 km) |
| Harnes to Oupeye | 121.47 mi (195.48 km) |
| Harnes to Overijse | 75.08 mi (120.83 km) |
| Harnes to Overpelt | 121.85 mi (196.10 km) |
| Harnes to Paal | 107.28 mi (172.65 km) |
| Harnes to Peer | 121.00 mi (194.73 km) |
| Harnes to Pepinster | 128.18 mi (206.29 km) |
| Harnes to Peruwelz | 30.20 mi (48.60 km) |
| Harnes to Perwez | 84.75 mi (136.39 km) |
| Harnes to Philippeville | 74.48 mi (119.86 km) |