| Plumstead to Orbetello | 814.31 mi (1,310.50 km) |
| Plumstead to Oria | 1,128.56 mi (1,816.24 km) |
| Plumstead to Oristano | 898.00 mi (1,445.19 km) |
| Plumstead to Orta Nova | 1,019.05 mi (1,640.00 km) |
| Plumstead to Orte | 849.40 mi (1,366.98 km) |
| Plumstead to Ortona | 921.58 mi (1,483.14 km) |
| Plumstead to Orvieto | 826.72 mi (1,330.48 km) |
| Plumstead to Orzinuovi | 615.94 mi (991.25 km) |
| Plumstead to Osimo | 832.59 mi (1,339.93 km) |
| Plumstead to Ospitaletto | 612.91 mi (986.38 km) |
| Plumstead to Ostuni | 1,114.84 mi (1,794.17 km) |
| Plumstead to Ottaviano | 1,003.63 mi (1,615.18 km) |
| Plumstead to Ovada | 615.72 mi (990.91 km) |
| Plumstead to Ozieri | 864.85 mi (1,391.83 km) |
| Plumstead to Paceco | 1,112.34 mi (1,790.14 km) |
