| Poughkeepsie to Orbetello | 4,165.65 mi (6,703.96 km) |
| Poughkeepsie to Oria | 4,517.36 mi (7,269.99 km) |
| Poughkeepsie to Oristano | 4,139.38 mi (6,661.69 km) |
| Poughkeepsie to Orta Nova | 4,402.11 mi (7,084.51 km) |
| Poughkeepsie to Orte | 4,216.01 mi (6,785.01 km) |
| Poughkeepsie to Ortona | 4,307.11 mi (6,931.62 km) |
| Poughkeepsie to Orvieto | 4,194.73 mi (6,750.77 km) |
| Poughkeepsie to Orzinuovi | 4,008.23 mi (6,450.63 km) |
| Poughkeepsie to Osimo | 4,226.20 mi (6,801.42 km) |
| Poughkeepsie to Ospitaletto | 4,008.98 mi (6,451.83 km) |
| Poughkeepsie to Ostuni | 4,506.02 mi (7,251.74 km) |
| Poughkeepsie to Ottaviano | 4,366.79 mi (7,027.67 km) |
| Poughkeepsie to Ovada | 3,978.49 mi (6,402.76 km) |
| Poughkeepsie to Ozieri | 4,133.75 mi (6,652.62 km) |
| Poughkeepsie to Paceco | 4,390.12 mi (7,065.21 km) |
