| Riverside to Opwijk | 5,581.99 mi (8,983.34 km) |
| Riverside to Ostend | 5,530.02 mi (8,899.71 km) |
| Riverside to Oud-Heverlee | 5,603.48 mi (9,017.93 km) |
| Riverside to Oud-Turnhout | 5,589.75 mi (8,995.83 km) |
| Riverside to Oudenaarde | 5,569.34 mi (8,962.98 km) |
| Riverside to Oudenburg | 5,534.57 mi (8,907.03 km) |
| Riverside to Oupeye | 5,639.76 mi (9,076.32 km) |
| Riverside to Overijse | 5,601.76 mi (9,015.15 km) |
| Riverside to Overpelt | 5,607.89 mi (9,025.02 km) |
| Riverside to Paal | 5,609.09 mi (9,026.96 km) |
| Riverside to Peer | 5,613.12 mi (9,033.45 km) |
| Riverside to Pepinster | 5,652.07 mi (9,096.13 km) |
| Riverside to Peruwelz | 5,584.78 mi (8,987.83 km) |
| Riverside to Perwez | 5,618.26 mi (9,041.71 km) |
| Riverside to Philippeville | 5,630.57 mi (9,061.52 km) |
