| Port Orchard to Orbetello | 5,613.49 mi (9,034.03 km) |
| Port Orchard to Oria | 5,886.08 mi (9,472.74 km) |
| Port Orchard to Oristano | 5,696.34 mi (9,167.37 km) |
| Port Orchard to Orta Nova | 5,790.23 mi (9,318.48 km) |
| Port Orchard to Orte | 5,641.39 mi (9,078.94 km) |
| Port Orchard to Ortona | 5,696.73 mi (9,168.00 km) |
| Port Orchard to Orvieto | 5,619.00 mi (9,042.91 km) |
| Port Orchard to Orzinuovi | 5,404.52 mi (8,697.74 km) |
| Port Orchard to Osimo | 5,605.82 mi (9,021.69 km) |
| Port Orchard to Ospitaletto | 5,398.72 mi (8,688.39 km) |
| Port Orchard to Ostuni | 5,870.42 mi (9,447.53 km) |
| Port Orchard to Ottaviano | 5,790.44 mi (9,318.81 km) |
| Port Orchard to Ovada | 5,417.41 mi (8,718.48 km) |
| Port Orchard to Ozieri | 5,667.09 mi (9,120.31 km) |
| Port Orchard to Paceco | 5,916.98 mi (9,522.46 km) |
