| Sheerness to Orbetello | 792.07 mi (1,274.72 km) |
| Sheerness to Oria | 1,103.25 mi (1,775.50 km) |
| Sheerness to Oristano | 880.94 mi (1,417.74 km) |
| Sheerness to Orta Nova | 994.26 mi (1,600.11 km) |
| Sheerness to Orte | 826.09 mi (1,329.46 km) |
| Sheerness to Ortona | 896.87 mi (1,443.37 km) |
| Sheerness to Orvieto | 803.41 mi (1,292.96 km) |
| Sheerness to Orzinuovi | 591.74 mi (952.31 km) |
| Sheerness to Osimo | 807.56 mi (1,299.65 km) |
| Sheerness to Ospitaletto | 588.38 mi (946.91 km) |
| Sheerness to Ostuni | 1,089.41 mi (1,753.24 km) |
| Sheerness to Ottaviano | 979.99 mi (1,577.14 km) |
| Sheerness to Ovada | 593.92 mi (955.82 km) |
| Sheerness to Ozieri | 846.74 mi (1,362.70 km) |
| Sheerness to Paceco | 1,092.27 mi (1,757.83 km) |
