| Penzance to Orbetello | 956.46 mi (1,539.27 km) |
| Penzance to Oria | 1,299.40 mi (2,091.18 km) |
| Penzance to Oristano | 983.85 mi (1,583.36 km) |
| Penzance to Orta Nova | 1,185.06 mi (1,907.17 km) |
| Penzance to Orte | 1,002.24 mi (1,612.95 km) |
| Penzance to Ortona | 1,088.72 mi (1,752.12 km) |
| Penzance to Orvieto | 980.23 mi (1,577.53 km) |
| Penzance to Orzinuovi | 787.12 mi (1,266.75 km) |
| Penzance to Osimo | 1,005.75 mi (1,618.60 km) |
| Penzance to Ospitaletto | 787.72 mi (1,267.71 km) |
| Penzance to Ostuni | 1,287.36 mi (2,071.80 km) |
| Penzance to Ottaviano | 1,156.22 mi (1,860.75 km) |
| Penzance to Ovada | 762.20 mi (1,226.65 km) |
| Penzance to Ozieri | 962.47 mi (1,548.94 km) |
| Penzance to Paceco | 1,222.72 mi (1,967.77 km) |
