| Penwortham to Orbetello | 1,007.79 mi (1,621.88 km) |
| Penwortham to Oria | 1,314.94 mi (2,116.20 km) |
| Penwortham to Oristano | 1,092.25 mi (1,757.80 km) |
| Penwortham to Orta Nova | 1,207.31 mi (1,942.98 km) |
| Penwortham to Orte | 1,041.28 mi (1,675.77 km) |
| Penwortham to Ortona | 1,110.14 mi (1,786.60 km) |
| Penwortham to Orvieto | 1,018.60 mi (1,639.28 km) |
| Penwortham to Orzinuovi | 806.12 mi (1,297.33 km) |
| Penwortham to Osimo | 1,020.25 mi (1,641.94 km) |
| Penwortham to Ospitaletto | 802.31 mi (1,291.19 km) |
| Penwortham to Ostuni | 1,300.81 mi (2,093.45 km) |
| Penwortham to Ottaviano | 1,194.82 mi (1,922.87 km) |
| Penwortham to Ovada | 809.66 mi (1,303.03 km) |
| Penwortham to Ozieri | 1,059.67 mi (1,705.37 km) |
| Penwortham to Paceco | 1,307.33 mi (2,103.94 km) |
