| Woolwich to Orbetello | 815.02 mi (1,311.64 km) |
| Woolwich to Oria | 1,129.43 mi (1,817.64 km) |
| Woolwich to Oristano | 898.47 mi (1,445.94 km) |
| Woolwich to Orta Nova | 1,019.89 mi (1,641.35 km) |
| Woolwich to Orte | 850.17 mi (1,368.21 km) |
| Woolwich to Ortona | 922.41 mi (1,484.48 km) |
| Woolwich to Orvieto | 827.48 mi (1,331.71 km) |
| Woolwich to Orzinuovi | 616.75 mi (992.56 km) |
| Woolwich to Osimo | 833.45 mi (1,341.31 km) |
| Woolwich to Ospitaletto | 613.74 mi (987.72 km) |
| Woolwich to Ostuni | 1,115.72 mi (1,795.57 km) |
| Woolwich to Ottaviano | 1,004.41 mi (1,616.44 km) |
| Woolwich to Ovada | 616.41 mi (992.02 km) |
| Woolwich to Ozieri | 865.36 mi (1,392.66 km) |
| Woolwich to Paceco | 1,112.94 mi (1,791.11 km) |
