| Benicia to Orbetello | 6,150.27 mi (9,897.91 km) |
| Benicia to Oria | 6,442.73 mi (10,368.57 km) |
| Benicia to Oristano | 6,212.63 mi (9,998.26 km) |
| Benicia to Orta Nova | 6,341.60 mi (10,205.82 km) |
| Benicia to Orte | 6,183.00 mi (9,950.57 km) |
| Benicia to Ortona | 6,246.00 mi (10,051.96 km) |
| Benicia to Orvieto | 6,160.37 mi (9,914.15 km) |
| Benicia to Orzinuovi | 5,946.63 mi (9,570.18 km) |
| Benicia to Osimo | 6,155.07 mi (9,905.63 km) |
| Benicia to Ospitaletto | 5,941.90 mi (9,562.56 km) |
| Benicia to Ostuni | 6,427.52 mi (10,344.10 km) |
| Benicia to Ottaviano | 6,335.32 mi (10,195.72 km) |
| Benicia to Ovada | 5,951.84 mi (9,578.57 km) |
| Benicia to Ozieri | 6,187.81 mi (9,958.32 km) |
| Benicia to Paceco | 6,444.00 mi (10,370.61 km) |
