| Redruth to Orbetello | 947.88 mi (1,525.46 km) |
| Redruth to Oria | 1,289.56 mi (2,075.35 km) |
| Redruth to Oristano | 978.56 mi (1,574.84 km) |
| Redruth to Orta Nova | 1,175.40 mi (1,891.63 km) |
| Redruth to Orte | 993.12 mi (1,598.28 km) |
| Redruth to Ortona | 1,078.90 mi (1,736.31 km) |
| Redruth to Orvieto | 971.04 mi (1,562.74 km) |
| Redruth to Orzinuovi | 776.60 mi (1,249.82 km) |
| Redruth to Osimo | 995.49 mi (1,602.08 km) |
| Redruth to Ospitaletto | 777.01 mi (1,250.47 km) |
| Redruth to Ostuni | 1,277.41 mi (2,055.80 km) |
| Redruth to Ottaviano | 1,147.31 mi (1,846.42 km) |
| Redruth to Ovada | 752.97 mi (1,211.78 km) |
| Redruth to Ozieri | 956.45 mi (1,539.25 km) |
| Redruth to Paceco | 1,216.36 mi (1,957.53 km) |
