| Cities | Distance |
|---|---|
| Hennef to Opwijk | 135.74 mi (218.45 km) |
| Hennef to Ostend | 192.15 mi (309.23 km) |
| Hennef to Oud-Heverlee | 114.29 mi (183.93 km) |
| Hennef to Oud-Turnhout | 106.48 mi (171.36 km) |
| Hennef to Oudenaarde | 160.84 mi (258.84 km) |
| Hennef to Oudenburg | 188.32 mi (303.08 km) |
| Hennef to Oupeye | 71.89 mi (115.70 km) |
| Hennef to Overijse | 120.13 mi (193.32 km) |
| Hennef to Overpelt | 86.51 mi (139.22 km) |
| Hennef to Paal | 93.62 mi (150.67 km) |
| Hennef to Peer | 83.21 mi (133.91 km) |
| Hennef to Pepinster | 65.94 mi (106.11 km) |
| Hennef to Peruwelz | 163.12 mi (262.51 km) |
| Hennef to Perwez | 108.56 mi (174.72 km) |
| Hennef to Philippeville | 126.72 mi (203.93 km) |