| Johnstone to Opwijk | 490.41 mi (789.24 km) |
| Johnstone to Ostend | 440.35 mi (708.67 km) |
| Johnstone to Oud-Heverlee | 511.62 mi (823.38 km) |
| Johnstone to Oud-Turnhout | 498.15 mi (801.70 km) |
| Johnstone to Oudenaarde | 479.33 mi (771.41 km) |
| Johnstone to Oudenburg | 444.85 mi (715.92 km) |
| Johnstone to Oupeye | 547.86 mi (881.70 km) |
| Johnstone to Overijse | 510.10 mi (820.93 km) |
| Johnstone to Overpelt | 516.67 mi (831.50 km) |
| Johnstone to Paal | 517.24 mi (832.41 km) |
| Johnstone to Peer | 521.74 mi (839.67 km) |
| Johnstone to Pepinster | 560.14 mi (901.46 km) |
| Johnstone to Peruwelz | 496.49 mi (799.03 km) |
| Johnstone to Perwez | 526.56 mi (847.41 km) |
| Johnstone to Philippeville | 540.59 mi (870.00 km) |
