| Fern Down to Opwijk | 265.29 mi (426.95 km) |
| Fern Down to Ostend | 211.40 mi (340.21 km) |
| Fern Down to Oud-Heverlee | 286.54 mi (461.14 km) |
| Fern Down to Oud-Turnhout | 300.82 mi (484.12 km) |
| Fern Down to Oudenaarde | 239.99 mi (386.22 km) |
| Fern Down to Oudenburg | 214.59 mi (345.35 km) |
| Fern Down to Oupeye | 329.62 mi (530.47 km) |
| Fern Down to Overijse | 280.87 mi (452.02 km) |
| Fern Down to Overpelt | 319.16 mi (513.63 km) |
| Fern Down to Paal | 308.33 mi (496.20 km) |
| Fern Down to Peer | 320.59 mi (515.93 km) |
| Fern Down to Pepinster | 338.05 mi (544.04 km) |
| Fern Down to Peruwelz | 240.95 mi (387.77 km) |
| Fern Down to Perwez | 293.94 mi (473.05 km) |
| Fern Down to Philippeville | 286.46 mi (461.01 km) |
