| Carshalton to Orbetello | 816.00 mi (1,313.22 km) |
| Carshalton to Oria | 1,132.71 mi (1,822.92 km) |
| Carshalton to Oristano | 896.28 mi (1,442.42 km) |
| Carshalton to Orta Nova | 1,022.74 mi (1,645.93 km) |
| Carshalton to Orte | 851.91 mi (1,371.01 km) |
| Carshalton to Ortona | 925.22 mi (1,489.00 km) |
| Carshalton to Orvieto | 829.23 mi (1,334.52 km) |
| Carshalton to Orzinuovi | 619.25 mi (996.59 km) |
| Carshalton to Osimo | 836.54 mi (1,346.29 km) |
| Carshalton to Ospitaletto | 616.50 mi (992.16 km) |
| Carshalton to Ostuni | 1,119.10 mi (1,801.02 km) |
| Carshalton to Ottaviano | 1,006.35 mi (1,619.57 km) |
| Carshalton to Ovada | 617.19 mi (993.27 km) |
| Carshalton to Ozieri | 863.77 mi (1,390.10 km) |
| Carshalton to Paceco | 1,112.45 mi (1,790.31 km) |
