| Bootle to Orbetello | 1,001.45 mi (1,611.67 km) |
| Bootle to Oria | 1,312.24 mi (2,111.84 km) |
| Bootle to Oristano | 1,081.62 mi (1,740.70 km) |
| Bootle to Orta Nova | 1,203.84 mi (1,937.39 km) |
| Bootle to Orte | 1,036.03 mi (1,667.33 km) |
| Bootle to Ortona | 1,106.52 mi (1,780.77 km) |
| Bootle to Orvieto | 1,013.34 mi (1,630.82 km) |
| Bootle to Orzinuovi | 801.67 mi (1,290.17 km) |
| Bootle to Osimo | 1,016.96 mi (1,636.64 km) |
| Bootle to Ospitaletto | 798.21 mi (1,284.59 km) |
| Bootle to Ostuni | 1,298.25 mi (2,089.33 km) |
| Bootle to Ottaviano | 1,189.98 mi (1,915.08 km) |
| Bootle to Ovada | 802.91 mi (1,292.17 km) |
| Bootle to Ozieri | 1,049.83 mi (1,689.54 km) |
| Bootle to Paceco | 1,298.98 mi (2,090.51 km) |
