| Greendale to Orbetello | 4,704.51 mi (7,571.17 km) |
| Greendale to Oria | 5,043.83 mi (8,117.27 km) |
| Greendale to Oristano | 4,707.24 mi (7,575.58 km) |
| Greendale to Orta Nova | 4,930.83 mi (7,935.40 km) |
| Greendale to Orte | 4,750.01 mi (7,644.41 km) |
| Greendale to Ortona | 4,833.70 mi (7,779.09 km) |
| Greendale to Orvieto | 4,727.87 mi (7,608.77 km) |
| Greendale to Orzinuovi | 4,528.35 mi (7,287.67 km) |
| Greendale to Osimo | 4,747.81 mi (7,640.87 km) |
| Greendale to Ospitaletto | 4,527.26 mi (7,285.93 km) |
| Greendale to Ostuni | 5,031.02 mi (8,096.64 km) |
| Greendale to Ottaviano | 4,904.27 mi (7,892.66 km) |
| Greendale to Ovada | 4,509.79 mi (7,257.81 km) |
| Greendale to Ozieri | 4,695.12 mi (7,556.07 km) |
| Greendale to Paceco | 4,955.79 mi (7,975.58 km) |
