| West Richland to Orbetello | 5,597.75 mi (9,008.70 km) |
| West Richland to Oria | 5,880.40 mi (9,463.59 km) |
| West Richland to Oristano | 5,671.39 mi (9,127.22 km) |
| West Richland to Orta Nova | 5,781.78 mi (9,304.87 km) |
| West Richland to Orte | 5,627.98 mi (9,057.36 km) |
| West Richland to Ortona | 5,687.13 mi (9,152.55 km) |
| West Richland to Orvieto | 5,605.45 mi (9,021.11 km) |
| West Richland to Orzinuovi | 5,391.10 mi (8,676.14 km) |
| West Richland to Osimo | 5,596.12 mi (9,006.09 km) |
| West Richland to Ospitaletto | 5,385.81 mi (8,667.63 km) |
| West Richland to Ostuni | 5,864.96 mi (9,438.74 km) |
| West Richland to Ottaviano | 5,778.78 mi (9,300.04 km) |
| West Richland to Ovada | 5,400.34 mi (8,691.00 km) |
| West Richland to Ozieri | 5,644.06 mi (9,083.24 km) |
| West Richland to Paceco | 5,897.07 mi (9,490.42 km) |
