| Buckley to Orbetello | 991.43 mi (1,595.55 km) |
| Buckley to Oria | 1,304.91 mi (2,100.06 km) |
| Buckley to Oristano | 1,068.47 mi (1,719.54 km) |
| Buckley to Orta Nova | 1,195.95 mi (1,924.69 km) |
| Buckley to Orte | 1,026.82 mi (1,652.51 km) |
| Buckley to Ortona | 1,098.53 mi (1,767.92 km) |
| Buckley to Orvieto | 1,004.14 mi (1,616.00 km) |
| Buckley to Orzinuovi | 793.18 mi (1,276.49 km) |
| Buckley to Osimo | 1,009.27 mi (1,624.26 km) |
| Buckley to Ospitaletto | 789.98 mi (1,271.35 km) |
| Buckley to Ostuni | 1,291.05 mi (2,077.74 km) |
| Buckley to Ottaviano | 1,181.04 mi (1,900.70 km) |
| Buckley to Ovada | 792.67 mi (1,275.68 km) |
| Buckley to Ozieri | 1,037.25 mi (1,669.29 km) |
| Buckley to Paceco | 1,287.42 mi (2,071.90 km) |
