| Greenwood Village to Orbetello | 5,502.15 mi (8,854.85 km) |
| Greenwood Village to Oria | 5,825.95 mi (9,375.96 km) |
| Greenwood Village to Oristano | 5,528.54 mi (8,897.33 km) |
| Greenwood Village to Orta Nova | 5,716.58 mi (9,199.95 km) |
| Greenwood Village to Orte | 5,542.93 mi (8,920.49 km) |
| Greenwood Village to Ortona | 5,619.06 mi (9,043.01 km) |
| Greenwood Village to Orvieto | 5,520.37 mi (8,884.17 km) |
| Greenwood Village to Orzinuovi | 5,312.95 mi (8,550.37 km) |
| Greenwood Village to Osimo | 5,530.21 mi (8,900.01 km) |
| Greenwood Village to Ospitaletto | 5,310.34 mi (8,546.17 km) |
| Greenwood Village to Ostuni | 5,812.03 mi (9,353.56 km) |
| Greenwood Village to Ottaviano | 5,697.94 mi (9,169.95 km) |
| Greenwood Village to Ovada | 5,303.99 mi (8,535.95 km) |
| Greenwood Village to Ozieri | 5,511.36 mi (8,869.68 km) |
| Greenwood Village to Paceco | 5,772.49 mi (9,289.92 km) |
