| Harrislee to Opwijk | 341.76 mi (550.01 km) |
| Harrislee to Ostend | 364.34 mi (586.35 km) |
| Harrislee to Oud-Heverlee | 337.02 mi (542.38 km) |
| Harrislee to Oud-Turnhout | 301.72 mi (485.57 km) |
| Harrislee to Oudenaarde | 363.82 mi (585.52 km) |
| Harrislee to Oudenburg | 363.99 mi (585.78 km) |
| Harrislee to Oupeye | 322.68 mi (519.30 km) |
| Harrislee to Overijse | 343.14 mi (552.23 km) |
| Harrislee to Overpelt | 297.05 mi (478.06 km) |
| Harrislee to Paal | 313.07 mi (503.83 km) |
| Harrislee to Peer | 301.15 mi (484.65 km) |
| Harrislee to Pepinster | 328.03 mi (527.92 km) |
| Harrislee to Peruwelz | 382.39 mi (615.39 km) |
| Harrislee to Perwez | 345.66 mi (556.29 km) |
| Harrislee to Philippeville | 376.77 mi (606.35 km) |
