| Greenacres to Orbetello | 5,066.45 mi (8,153.66 km) |
| Greenacres to Oria | 5,424.65 mi (8,730.13 km) |
| Greenacres to Oristano | 5,000.84 mi (8,048.08 km) |
| Greenacres to Orta Nova | 5,309.50 mi (8,544.82 km) |
| Greenacres to Orte | 5,121.61 mi (8,242.43 km) |
| Greenacres to Ortona | 5,219.49 mi (8,399.96 km) |
| Greenacres to Orvieto | 5,101.98 mi (8,210.85 km) |
| Greenacres to Orzinuovi | 4,935.83 mi (7,943.45 km) |
| Greenacres to Osimo | 5,146.56 mi (8,282.59 km) |
| Greenacres to Ospitaletto | 4,938.65 mi (7,947.99 km) |
| Greenacres to Ostuni | 5,415.39 mi (8,715.23 km) |
| Greenacres to Ottaviano | 5,264.05 mi (8,471.67 km) |
| Greenacres to Ovada | 4,893.70 mi (7,875.66 km) |
| Greenacres to Ozieri | 5,004.89 mi (8,054.59 km) |
| Greenacres to Paceco | 5,247.54 mi (8,445.10 km) |
