| Greenock to Orthez | 878.95 mi (1,414.54 km) |
| Greenock to Orvault | 614.42 mi (988.81 km) |
| Greenock to Osny | 555.39 mi (893.82 km) |
| Greenock to Ostwald | 732.76 mi (1,179.27 km) |
| Greenock to Ouistreham | 497.92 mi (801.32 km) |
| Greenock to Oullins | 819.64 mi (1,319.08 km) |
| Greenock to Outreau | 447.09 mi (719.52 km) |
| Greenock to Oyonnax | 806.18 mi (1,297.42 km) |
| Greenock to Ozoir-la-Ferriere | 585.97 mi (943.02 km) |
| Greenock to Pace | 553.72 mi (891.13 km) |
| Greenock to Palaiseau | 580.32 mi (933.93 km) |
| Greenock to Pamiers | 930.70 mi (1,497.82 km) |
| Greenock to Panazol | 746.39 mi (1,201.20 km) |
| Greenock to Pantin | 572.64 mi (921.57 km) |
| Greenock to Paray-le-Monial | 759.34 mi (1,222.04 km) |
