| San Bruno to Orbetello | 6,184.50 mi (9,952.98 km) |
| San Bruno to Oria | 6,477.10 mi (10,423.88 km) |
| San Bruno to Oristano | 6,246.60 mi (10,052.93 km) |
| San Bruno to Orta Nova | 6,375.94 mi (10,261.08 km) |
| San Bruno to Orte | 6,217.26 mi (10,005.72 km) |
| San Bruno to Ortona | 6,280.32 mi (10,107.20 km) |
| San Bruno to Orvieto | 6,194.63 mi (9,969.29 km) |
| San Bruno to Orzinuovi | 5,980.91 mi (9,625.35 km) |
| San Bruno to Osimo | 6,189.40 mi (9,960.88 km) |
| San Bruno to Ospitaletto | 5,976.19 mi (9,617.74 km) |
| San Bruno to Ostuni | 6,461.89 mi (10,399.41 km) |
| San Bruno to Ottaviano | 6,369.61 mi (10,250.90 km) |
| San Bruno to Ovada | 5,986.05 mi (9,633.61 km) |
| San Bruno to Ozieri | 6,221.85 mi (10,013.09 km) |
| San Bruno to Paceco | 6,478.09 mi (10,425.49 km) |
