| Troy to Opwijk | 3,926.17 mi (6,318.56 km) |
| Troy to Ostend | 3,869.35 mi (6,227.12 km) |
| Troy to Oud-Heverlee | 3,949.07 mi (6,355.42 km) |
| Troy to Oud-Turnhout | 3,945.01 mi (6,348.89 km) |
| Troy to Oudenaarde | 3,907.64 mi (6,288.74 km) |
| Troy to Oudenburg | 3,873.81 mi (6,234.29 km) |
| Troy to Oupeye | 3,990.53 mi (6,422.14 km) |
| Troy to Overijse | 3,945.64 mi (6,349.89 km) |
| Troy to Overpelt | 3,964.75 mi (6,380.66 km) |
| Troy to Paal | 3,961.47 mi (6,375.37 km) |
| Troy to Peer | 3,968.97 mi (6,387.44 km) |
| Troy to Pepinster | 4,001.98 mi (6,440.56 km) |
| Troy to Peruwelz | 3,917.92 mi (6,305.29 km) |
| Troy to Perwez | 3,961.75 mi (6,375.82 km) |
| Troy to Philippeville | 3,965.81 mi (6,382.35 km) |
