| Forest Grove to Opwijk | 5,066.29 mi (8,153.41 km) |
| Forest Grove to Ostend | 5,019.57 mi (8,078.22 km) |
| Forest Grove to Oud-Heverlee | 5,086.01 mi (8,185.14 km) |
| Forest Grove to Oud-Turnhout | 5,066.64 mi (8,153.97 km) |
| Forest Grove to Oudenaarde | 5,057.99 mi (8,140.04 km) |
| Forest Grove to Oudenburg | 5,024.01 mi (8,085.36 km) |
| Forest Grove to Oupeye | 5,117.52 mi (8,235.86 km) |
| Forest Grove to Overijse | 5,085.46 mi (8,184.26 km) |
| Forest Grove to Overpelt | 5,083.04 mi (8,180.37 km) |
| Forest Grove to Paal | 5,087.05 mi (8,186.81 km) |
| Forest Grove to Peer | 5,088.71 mi (8,189.50 km) |
| Forest Grove to Pepinster | 5,129.90 mi (8,255.77 km) |
| Forest Grove to Peruwelz | 5,076.21 mi (8,169.37 km) |
| Forest Grove to Perwez | 5,101.56 mi (8,210.17 km) |
| Forest Grove to Philippeville | 5,118.79 mi (8,237.90 km) |
