| Troisdorf to Opwijk | 129.95 mi (209.14 km) |
| Troisdorf to Ostend | 186.25 mi (299.74 km) |
| Troisdorf to Oud-Heverlee | 108.63 mi (174.83 km) |
| Troisdorf to Oud-Turnhout | 100.46 mi (161.67 km) |
| Troisdorf to Oudenaarde | 155.16 mi (249.71 km) |
| Troisdorf to Oudenburg | 182.44 mi (293.61 km) |
| Troisdorf to Oupeye | 66.52 mi (107.05 km) |
| Troisdorf to Overijse | 114.53 mi (184.32 km) |
| Troisdorf to Overpelt | 80.49 mi (129.54 km) |
| Troisdorf to Paal | 87.71 mi (141.16 km) |
| Troisdorf to Peer | 77.21 mi (124.26 km) |
| Troisdorf to Pepinster | 61.08 mi (98.31 km) |
| Troisdorf to Peruwelz | 157.79 mi (253.94 km) |
| Troisdorf to Perwez | 103.24 mi (166.14 km) |
| Troisdorf to Philippeville | 122.14 mi (196.57 km) |
