| Borehamwood to Opwijk | 198.23 mi (319.02 km) |
| Borehamwood to Ostend | 140.65 mi (226.35 km) |
| Borehamwood to Oud-Heverlee | 221.03 mi (355.72 km) |
| Borehamwood to Oud-Turnhout | 227.29 mi (365.79 km) |
| Borehamwood to Oudenaarde | 176.48 mi (284.02 km) |
| Borehamwood to Oudenburg | 144.74 mi (232.94 km) |
| Borehamwood to Oupeye | 264.38 mi (425.48 km) |
| Borehamwood to Overijse | 216.51 mi (348.45 km) |
| Borehamwood to Overpelt | 246.85 mi (397.27 km) |
| Borehamwood to Paal | 238.78 mi (384.27 km) |
| Borehamwood to Peer | 249.43 mi (401.42 km) |
| Borehamwood to Pepinster | 274.57 mi (441.88 km) |
| Borehamwood to Peruwelz | 184.95 mi (297.64 km) |
| Borehamwood to Perwez | 231.75 mi (372.97 km) |
| Borehamwood to Philippeville | 232.85 mi (374.73 km) |
