| Ardrossan to Opwijk | 491.52 mi (791.02 km) |
| Ardrossan to Ostend | 440.39 mi (708.75 km) |
| Ardrossan to Oud-Heverlee | 513.03 mi (825.65 km) |
| Ardrossan to Oud-Turnhout | 500.75 mi (805.87 km) |
| Ardrossan to Oudenaarde | 479.56 mi (771.77 km) |
| Ardrossan to Oudenburg | 444.92 mi (716.03 km) |
| Ardrossan to Oupeye | 550.06 mi (885.24 km) |
| Ardrossan to Overijse | 511.28 mi (822.83 km) |
| Ardrossan to Overpelt | 519.51 mi (836.07 km) |
| Ardrossan to Paal | 519.53 mi (836.10 km) |
| Ardrossan to Peer | 524.48 mi (844.06 km) |
| Ardrossan to Pepinster | 562.28 mi (904.90 km) |
| Ardrossan to Peruwelz | 496.14 mi (798.46 km) |
| Ardrossan to Perwez | 527.78 mi (849.38 km) |
| Ardrossan to Philippeville | 540.86 mi (870.43 km) |
