| Plum to Orbetello | 4,463.78 mi (7,183.76 km) |
| Plum to Oria | 4,813.39 mi (7,746.41 km) |
| Plum to Oristano | 4,443.20 mi (7,150.64 km) |
| Plum to Orta Nova | 4,698.45 mi (7,561.42 km) |
| Plum to Orte | 4,513.19 mi (7,263.28 km) |
| Plum to Ortona | 4,602.84 mi (7,407.55 km) |
| Plum to Orvieto | 4,491.70 mi (7,228.69 km) |
| Plum to Orzinuovi | 4,302.01 mi (6,923.41 km) |
| Plum to Osimo | 4,520.70 mi (7,275.36 km) |
| Plum to Ospitaletto | 4,302.34 mi (6,923.95 km) |
| Plum to Ostuni | 4,801.71 mi (7,727.61 km) |
| Plum to Ottaviano | 4,664.94 mi (7,507.49 km) |
| Plum to Ovada | 4,274.70 mi (6,879.47 km) |
| Plum to Ozieri | 4,436.35 mi (7,139.61 km) |
| Plum to Paceco | 4,693.83 mi (7,553.99 km) |
