| Ross on Wye to Opwijk | 298.72 mi (480.74 km) |
| Ross on Wye to Ostend | 241.15 mi (388.09 km) |
| Ross on Wye to Oud-Heverlee | 321.49 mi (517.40 km) |
| Ross on Wye to Oud-Turnhout | 327.24 mi (526.65 km) |
| Ross on Wye to Oudenaarde | 276.65 mi (445.22 km) |
| Ross on Wye to Oudenburg | 245.23 mi (394.67 km) |
| Ross on Wye to Oupeye | 364.87 mi (587.20 km) |
| Ross on Wye to Overijse | 316.90 mi (510.01 km) |
| Ross on Wye to Overpelt | 346.94 mi (558.34 km) |
| Ross on Wye to Paal | 339.19 mi (545.87 km) |
| Ross on Wye to Peer | 349.66 mi (562.73 km) |
| Ross on Wye to Pepinster | 375.00 mi (603.51 km) |
| Ross on Wye to Peruwelz | 283.86 mi (456.82 km) |
| Ross on Wye to Perwez | 331.99 mi (534.29 km) |
| Ross on Wye to Philippeville | 331.63 mi (533.70 km) |
