| Chorley to Orbetello | 1,000.99 mi (1,610.93 km) |
| Chorley to Oria | 1,308.51 mi (2,105.84 km) |
| Chorley to Oristano | 1,085.25 mi (1,746.54 km) |
| Chorley to Orta Nova | 1,200.78 mi (1,932.47 km) |
| Chorley to Orte | 1,034.57 mi (1,664.98 km) |
| Chorley to Ortona | 1,103.59 mi (1,776.06 km) |
| Chorley to Orvieto | 1,011.89 mi (1,628.48 km) |
| Chorley to Orzinuovi | 799.48 mi (1,286.65 km) |
| Chorley to Osimo | 1,013.74 mi (1,631.46 km) |
| Chorley to Ospitaletto | 795.71 mi (1,280.56 km) |
| Chorley to Ostuni | 1,294.39 mi (2,083.12 km) |
| Chorley to Ottaviano | 1,188.15 mi (1,912.14 km) |
| Chorley to Ovada | 802.83 mi (1,292.03 km) |
| Chorley to Ozieri | 1,052.68 mi (1,694.13 km) |
| Chorley to Paceco | 1,300.41 mi (2,092.80 km) |
