| Mountain View to Orbetello | 6,187.33 mi (9,957.54 km) |
| Mountain View to Oria | 6,481.21 mi (10,430.50 km) |
| Mountain View to Oristano | 6,248.10 mi (10,055.35 km) |
| Mountain View to Orta Nova | 6,379.71 mi (10,267.14 km) |
| Mountain View to Orte | 6,220.41 mi (10,010.78 km) |
| Mountain View to Ortona | 6,283.97 mi (10,113.07 km) |
| Mountain View to Orvieto | 6,197.76 mi (9,974.34 km) |
| Mountain View to Orzinuovi | 5,984.16 mi (9,630.58 km) |
| Mountain View to Osimo | 6,193.07 mi (9,966.79 km) |
| Mountain View to Ospitaletto | 5,979.51 mi (9,623.09 km) |
| Mountain View to Ostuni | 6,466.04 mi (10,406.08 km) |
| Mountain View to Ottaviano | 6,372.93 mi (10,256.24 km) |
| Mountain View to Ovada | 5,988.79 mi (9,638.03 km) |
| Mountain View to Ozieri | 6,223.63 mi (10,015.97 km) |
| Mountain View to Paceco | 6,480.20 mi (10,428.87 km) |
