| Carterton to Orbetello | 879.15 mi (1,414.86 km) |
| Carterton to Oria | 1,198.67 mi (1,929.07 km) |
| Carterton to Oristano | 952.45 mi (1,532.83 km) |
| Carterton to Orta Nova | 1,088.30 mi (1,751.45 km) |
| Carterton to Orte | 916.19 mi (1,474.46 km) |
| Carterton to Ortona | 990.76 mi (1,594.48 km) |
| Carterton to Orvieto | 893.53 mi (1,437.99 km) |
| Carterton to Orzinuovi | 684.57 mi (1,101.71 km) |
| Carterton to Osimo | 902.38 mi (1,452.24 km) |
| Carterton to Ospitaletto | 682.09 mi (1,097.71 km) |
| Carterton to Ostuni | 1,185.15 mi (1,907.31 km) |
| Carterton to Ottaviano | 1,070.86 mi (1,723.38 km) |
| Carterton to Ovada | 680.16 mi (1,094.60 km) |
| Carterton to Ozieri | 921.53 mi (1,483.06 km) |
| Carterton to Paceco | 1,172.62 mi (1,887.15 km) |
