| Boone to Opwijk | 4,165.40 mi (6,703.56 km) |
| Boone to Ostend | 4,107.82 mi (6,610.89 km) |
| Boone to Oud-Heverlee | 4,188.38 mi (6,740.55 km) |
| Boone to Oud-Turnhout | 4,188.33 mi (6,740.47 km) |
| Boone to Oudenaarde | 4,144.84 mi (6,670.47 km) |
| Boone to Oudenburg | 4,112.13 mi (6,617.84 km) |
| Boone to Oupeye | 4,231.06 mi (6,809.23 km) |
| Boone to Overijse | 4,184.32 mi (6,734.01 km) |
| Boone to Overpelt | 4,208.28 mi (6,772.58 km) |
| Boone to Paal | 4,203.27 mi (6,764.50 km) |
| Boone to Peer | 4,212.00 mi (6,778.56 km) |
| Boone to Pepinster | 4,241.91 mi (6,826.69 km) |
| Boone to Peruwelz | 4,152.74 mi (6,683.18 km) |
| Boone to Perwez | 4,199.92 mi (6,759.12 km) |
| Boone to Philippeville | 4,200.47 mi (6,760.00 km) |
