| Willowbrook to Opwijk | 5,609.05 mi (9,026.89 km) |
| Willowbrook to Ostend | 5,557.34 mi (8,943.67 km) |
| Willowbrook to Oud-Heverlee | 5,630.46 mi (9,061.34 km) |
| Willowbrook to Oud-Turnhout | 5,616.38 mi (9,038.70 km) |
| Willowbrook to Oudenaarde | 5,596.64 mi (9,006.92 km) |
| Willowbrook to Oudenburg | 5,561.89 mi (8,951.00 km) |
| Willowbrook to Oupeye | 5,666.49 mi (9,119.34 km) |
| Willowbrook to Overijse | 5,628.80 mi (9,058.68 km) |
| Willowbrook to Overpelt | 5,634.44 mi (9,067.75 km) |
| Willowbrook to Paal | 5,635.81 mi (9,069.96 km) |
| Willowbrook to Peer | 5,639.70 mi (9,076.23 km) |
| Willowbrook to Pepinster | 5,678.81 mi (9,139.17 km) |
| Willowbrook to Peruwelz | 5,612.25 mi (9,032.05 km) |
| Willowbrook to Perwez | 5,645.29 mi (9,085.22 km) |
| Willowbrook to Philippeville | 5,657.90 mi (9,105.50 km) |
