| Prescot to Orbetello | 995.21 mi (1,601.63 km) |
| Prescot to Oria | 1,305.38 mi (2,100.81 km) |
| Prescot to Oristano | 1,076.38 mi (1,732.26 km) |
| Prescot to Orta Nova | 1,197.10 mi (1,926.54 km) |
| Prescot to Orte | 1,029.58 mi (1,656.95 km) |
| Prescot to Ortona | 1,099.80 mi (1,769.95 km) |
| Prescot to Orvieto | 1,006.90 mi (1,620.45 km) |
| Prescot to Orzinuovi | 795.08 mi (1,279.55 km) |
| Prescot to Osimo | 1,010.19 mi (1,625.75 km) |
| Prescot to Ospitaletto | 791.55 mi (1,273.88 km) |
| Prescot to Ostuni | 1,291.38 mi (2,078.27 km) |
| Prescot to Ottaviano | 1,183.46 mi (1,904.60 km) |
| Prescot to Ovada | 796.75 mi (1,282.24 km) |
| Prescot to Ozieri | 1,044.38 mi (1,680.77 km) |
| Prescot to Paceco | 1,293.18 mi (2,081.17 km) |
