| Nanticoke to Orbetello | 4,274.70 mi (6,879.47 km) |
| Nanticoke to Oria | 4,625.82 mi (7,444.54 km) |
| Nanticoke to Oristano | 4,250.09 mi (6,839.86 km) |
| Nanticoke to Orta Nova | 4,510.65 mi (7,259.19 km) |
| Nanticoke to Orte | 4,324.78 mi (6,960.06 km) |
| Nanticoke to Ortona | 4,415.45 mi (7,105.98 km) |
| Nanticoke to Orvieto | 4,303.44 mi (6,925.72 km) |
| Nanticoke to Orzinuovi | 4,115.95 mi (6,623.98 km) |
| Nanticoke to Osimo | 4,334.16 mi (6,975.16 km) |
| Nanticoke to Ospitaletto | 4,116.57 mi (6,624.98 km) |
| Nanticoke to Ostuni | 4,614.37 mi (7,426.11 km) |
| Nanticoke to Ottaviano | 4,475.87 mi (7,203.21 km) |
| Nanticoke to Ovada | 4,086.95 mi (6,577.31 km) |
| Nanticoke to Ozieri | 4,244.11 mi (6,830.24 km) |
| Nanticoke to Paceco | 4,500.81 mi (7,243.35 km) |
