| Sittingbourne to Orbetello | 787.51 mi (1,267.38 km) |
| Sittingbourne to Oria | 1,099.79 mi (1,769.94 km) |
| Sittingbourne to Oristano | 875.21 mi (1,408.52 km) |
| Sittingbourne to Orta Nova | 990.58 mi (1,594.19 km) |
| Sittingbourne to Orte | 821.87 mi (1,322.67 km) |
| Sittingbourne to Ortona | 893.15 mi (1,437.39 km) |
| Sittingbourne to Orvieto | 799.18 mi (1,286.16 km) |
| Sittingbourne to Orzinuovi | 587.81 mi (945.99 km) |
| Sittingbourne to Osimo | 803.98 mi (1,293.88 km) |
| Sittingbourne to Ospitaletto | 584.58 mi (940.79 km) |
| Sittingbourne to Ostuni | 1,086.01 mi (1,747.76 km) |
| Sittingbourne to Ottaviano | 975.88 mi (1,570.53 km) |
| Sittingbourne to Ovada | 589.22 mi (948.26 km) |
| Sittingbourne to Ozieri | 841.20 mi (1,353.79 km) |
| Sittingbourne to Paceco | 1,087.16 mi (1,749.61 km) |
