| Green to Orbetello | 4,519.43 mi (7,273.33 km) |
| Green to Oria | 4,867.29 mi (7,833.14 km) |
| Green to Oristano | 4,503.53 mi (7,247.73 km) |
| Green to Orta Nova | 4,752.63 mi (7,648.62 km) |
| Green to Orte | 4,568.10 mi (7,351.65 km) |
| Green to Ortona | 4,656.62 mi (7,494.11 km) |
| Green to Orvieto | 4,546.46 mi (7,316.81 km) |
| Green to Orzinuovi | 4,354.59 mi (7,008.03 km) |
| Green to Osimo | 4,573.65 mi (7,360.58 km) |
| Green to Ospitaletto | 4,354.63 mi (7,008.11 km) |
| Green to Ostuni | 4,855.37 mi (7,813.96 km) |
| Green to Ottaviano | 4,720.49 mi (7,596.89 km) |
| Green to Ovada | 4,329.03 mi (6,966.90 km) |
| Green to Ozieri | 4,495.61 mi (7,234.99 km) |
| Green to Paceco | 4,753.95 mi (7,650.74 km) |
