| Vallejo to Orbetello | 6,150.32 mi (9,897.99 km) |
| Vallejo to Oria | 6,442.50 mi (10,368.21 km) |
| Vallejo to Oristano | 6,212.96 mi (9,998.79 km) |
| Vallejo to Orta Nova | 6,341.45 mi (10,205.58 km) |
| Vallejo to Orte | 6,182.98 mi (9,950.54 km) |
| Vallejo to Ortona | 6,245.87 mi (10,051.76 km) |
| Vallejo to Orvieto | 6,160.35 mi (9,914.13 km) |
| Vallejo to Orzinuovi | 5,946.59 mi (9,570.12 km) |
| Vallejo to Osimo | 6,154.94 mi (9,905.42 km) |
| Vallejo to Ospitaletto | 5,941.84 mi (9,562.47 km) |
| Vallejo to Ostuni | 6,427.29 mi (10,343.72 km) |
| Vallejo to Ottaviano | 6,335.27 mi (10,195.63 km) |
| Vallejo to Ovada | 5,951.91 mi (9,578.67 km) |
| Vallejo to Ozieri | 6,188.08 mi (9,958.75 km) |
| Vallejo to Paceco | 6,444.20 mi (10,370.93 km) |
