| Westbrook to Opwijk | 3,375.29 mi (5,432.00 km) |
| Westbrook to Ostend | 3,317.72 mi (5,339.35 km) |
| Westbrook to Oud-Heverlee | 3,398.27 mi (5,468.99 km) |
| Westbrook to Oud-Turnhout | 3,398.16 mi (5,468.81 km) |
| Westbrook to Oudenaarde | 3,354.79 mi (5,399.01 km) |
| Westbrook to Oudenburg | 3,322.04 mi (5,346.30 km) |
| Westbrook to Oupeye | 3,440.93 mi (5,537.63 km) |
| Westbrook to Overijse | 3,394.23 mi (5,462.48 km) |
| Westbrook to Overpelt | 3,418.11 mi (5,500.92 km) |
| Westbrook to Paal | 3,413.11 mi (5,492.87 km) |
| Westbrook to Peer | 3,421.84 mi (5,506.91 km) |
| Westbrook to Pepinster | 3,451.79 mi (5,555.12 km) |
| Westbrook to Peruwelz | 3,362.80 mi (5,411.90 km) |
| Westbrook to Perwez | 3,409.85 mi (5,487.62 km) |
| Westbrook to Philippeville | 3,410.55 mi (5,488.75 km) |
