| Hartselle to Opwijk | 4,462.64 mi (7,181.93 km) |
| Hartselle to Ostend | 4,405.22 mi (7,089.52 km) |
| Hartselle to Oud-Heverlee | 4,485.64 mi (7,218.93 km) |
| Hartselle to Oud-Turnhout | 4,484.31 mi (7,216.80 km) |
| Hartselle to Oudenaarde | 4,442.69 mi (7,149.81 km) |
| Hartselle to Oudenburg | 4,409.59 mi (7,096.55 km) |
| Hartselle to Oupeye | 4,527.99 mi (7,287.09 km) |
| Hartselle to Overijse | 4,481.76 mi (7,212.70 km) |
| Hartselle to Overpelt | 4,504.22 mi (7,248.85 km) |
| Hartselle to Paal | 4,499.75 mi (7,241.65 km) |
| Hartselle to Peer | 4,508.11 mi (7,255.10 km) |
| Hartselle to Pepinster | 4,539.04 mi (7,304.88 km) |
| Hartselle to Peruwelz | 4,451.32 mi (7,163.71 km) |
| Hartselle to Perwez | 4,497.54 mi (7,238.09 km) |
| Hartselle to Philippeville | 4,499.16 mi (7,240.70 km) |
