| Cities | Distance |
|---|---|
| Greenock to Opwijk | 503.32 mi (810.02 km) |
| Greenock to Ostend | 453.22 mi (729.38 km) |
| Greenock to Oud-Heverlee | 524.54 mi (844.16 km) |
| Greenock to Oud-Turnhout | 511.05 mi (822.45 km) |
| Greenock to Oudenaarde | 492.21 mi (792.14 km) |
| Greenock to Oudenburg | 457.72 mi (736.63 km) |
| Greenock to Oupeye | 560.77 mi (902.47 km) |
| Greenock to Overijse | 523.01 mi (841.71 km) |
| Greenock to Overpelt | 529.55 mi (852.23 km) |
| Greenock to Paal | 530.14 mi (853.18 km) |
| Greenock to Peer | 534.63 mi (860.41 km) |
| Greenock to Pepinster | 573.05 mi (922.24 km) |
| Greenock to Peruwelz | 509.34 mi (819.70 km) |
| Greenock to Perwez | 539.47 mi (868.20 km) |
| Greenock to Philippeville | 553.48 mi (890.74 km) |