| Stanford to Orbetello | 6,188.45 mi (9,959.35 km) |
| Stanford to Oria | 6,482.07 mi (10,431.88 km) |
| Stanford to Oristano | 6,249.49 mi (10,057.59 km) |
| Stanford to Orta Nova | 6,380.64 mi (10,268.65 km) |
| Stanford to Orte | 6,221.47 mi (10,012.48 km) |
| Stanford to Ortona | 6,284.93 mi (10,114.61 km) |
| Stanford to Orvieto | 6,198.83 mi (9,976.05 km) |
| Stanford to Orzinuovi | 5,985.20 mi (9,632.25 km) |
| Stanford to Osimo | 6,194.02 mi (9,968.32 km) |
| Stanford to Ospitaletto | 5,980.53 mi (9,624.74 km) |
| Stanford to Ostuni | 6,466.89 mi (10,407.46 km) |
| Stanford to Ottaviano | 6,373.95 mi (10,257.89 km) |
| Stanford to Ovada | 5,989.93 mi (9,639.86 km) |
| Stanford to Ozieri | 6,224.97 mi (10,018.12 km) |
| Stanford to Paceco | 6,481.47 mi (10,430.91 km) |
