| Pleasanton to Orbetello | 6,165.96 mi (9,923.15 km) |
| Pleasanton to Oria | 6,459.83 mi (10,396.09 km) |
| Pleasanton to Oristano | 6,226.80 mi (10,021.07 km) |
| Pleasanton to Orta Nova | 6,358.32 mi (10,232.73 km) |
| Pleasanton to Orte | 6,199.03 mi (9,976.37 km) |
| Pleasanton to Ortona | 6,262.59 mi (10,078.66 km) |
| Pleasanton to Orvieto | 6,176.38 mi (9,939.93 km) |
| Pleasanton to Orzinuovi | 5,962.78 mi (9,596.17 km) |
| Pleasanton to Osimo | 6,171.69 mi (9,932.37 km) |
| Pleasanton to Ospitaletto | 5,958.13 mi (9,588.68 km) |
| Pleasanton to Ostuni | 6,444.66 mi (10,371.68 km) |
| Pleasanton to Ottaviano | 6,351.55 mi (10,221.83 km) |
| Pleasanton to Ovada | 5,967.42 mi (9,603.64 km) |
| Pleasanton to Ozieri | 6,202.31 mi (9,981.65 km) |
| Pleasanton to Paceco | 6,458.85 mi (10,394.52 km) |
