| Friern Barnet to Opwijk | 192.81 mi (310.29 km) |
| Friern Barnet to Ostend | 135.27 mi (217.70 km) |
| Friern Barnet to Oud-Heverlee | 215.58 mi (346.94 km) |
| Friern Barnet to Oud-Turnhout | 222.22 mi (357.63 km) |
| Friern Barnet to Oudenaarde | 170.91 mi (275.05 km) |
| Friern Barnet to Oudenburg | 139.33 mi (224.24 km) |
| Friern Barnet to Oupeye | 258.96 mi (416.75 km) |
| Friern Barnet to Overijse | 211.02 mi (339.60 km) |
| Friern Barnet to Overpelt | 241.73 mi (389.03 km) |
| Friern Barnet to Paal | 233.51 mi (375.79 km) |
| Friern Barnet to Peer | 244.25 mi (393.09 km) |
| Friern Barnet to Pepinster | 269.10 mi (433.07 km) |
| Friern Barnet to Peruwelz | 179.22 mi (288.43 km) |
| Friern Barnet to Perwez | 226.20 mi (364.04 km) |
| Friern Barnet to Philippeville | 227.12 mi (365.51 km) |
