| Yorba Linda to Orbetello | 6,254.57 mi (10,065.75 km) |
| Yorba Linda to Oria | 6,564.69 mi (10,564.85 km) |
| Yorba Linda to Oristano | 6,296.95 mi (10,133.97 km) |
| Yorba Linda to Orta Nova | 6,458.89 mi (10,394.59 km) |
| Yorba Linda to Orte | 6,291.75 mi (10,125.59 km) |
| Yorba Linda to Ortona | 6,361.93 mi (10,238.53 km) |
| Yorba Linda to Orvieto | 6,269.07 mi (10,089.09 km) |
| Yorba Linda to Orzinuovi | 6,057.88 mi (9,749.21 km) |
| Yorba Linda to Osimo | 6,271.73 mi (10,093.37 km) |
| Yorba Linda to Ospitaletto | 6,054.24 mi (9,743.36 km) |
| Yorba Linda to Ostuni | 6,550.09 mi (10,541.34 km) |
| Yorba Linda to Ottaviano | 6,446.07 mi (10,373.95 km) |
| Yorba Linda to Ovada | 6,055.56 mi (9,745.49 km) |
| Yorba Linda to Ozieri | 6,276.46 mi (10,100.99 km) |
| Yorba Linda to Paceco | 6,536.31 mi (10,519.17 km) |
