| Carteret to Orbetello | 4,220.33 mi (6,791.96 km) |
| Carteret to Oria | 4,573.08 mi (7,359.66 km) |
| Carteret to Oristano | 4,190.37 mi (6,743.74 km) |
| Carteret to Orta Nova | 4,457.70 mi (7,173.97 km) |
| Carteret to Orte | 4,271.20 mi (6,873.84 km) |
| Carteret to Ortona | 4,363.05 mi (7,021.65 km) |
| Carteret to Orvieto | 4,250.06 mi (6,839.81 km) |
| Carteret to Orzinuovi | 4,065.27 mi (6,542.42 km) |
| Carteret to Osimo | 4,282.81 mi (6,892.51 km) |
| Carteret to Ospitaletto | 4,066.22 mi (6,543.95 km) |
| Carteret to Ostuni | 4,561.91 mi (7,341.69 km) |
| Carteret to Ottaviano | 4,421.40 mi (7,115.55 km) |
| Carteret to Ovada | 4,034.30 mi (6,492.58 km) |
| Carteret to Ozieri | 4,185.62 mi (6,736.10 km) |
| Carteret to Paceco | 4,441.10 mi (7,147.26 km) |
