| Panama City to Orbetello | 5,161.67 mi (8,306.91 km) |
| Panama City to Oria | 5,517.07 mi (8,878.87 km) |
| Panama City to Oristano | 5,118.68 mi (8,237.73 km) |
| Panama City to Orta Nova | 5,401.49 mi (8,692.85 km) |
| Panama City to Orte | 5,214.08 mi (8,391.24 km) |
| Panama City to Ortona | 5,308.04 mi (8,542.47 km) |
| Panama City to Orvieto | 5,193.36 mi (8,357.91 km) |
| Panama City to Orzinuovi | 5,013.69 mi (8,068.76 km) |
| Panama City to Osimo | 5,229.78 mi (8,416.52 km) |
| Panama City to Ospitaletto | 5,015.16 mi (8,071.12 km) |
| Panama City to Ostuni | 5,506.47 mi (8,861.81 km) |
| Panama City to Ottaviano | 5,362.14 mi (8,629.53 km) |
| Panama City to Ovada | 4,979.38 mi (8,013.53 km) |
| Panama City to Ozieri | 5,117.32 mi (8,235.53 km) |
| Panama City to Paceco | 5,368.70 mi (8,640.09 km) |
