| Mercer Island to Ondokuzmayis | 6,141.66 mi (9,884.04 km) |
| Mercer Island to Ordu | 6,198.39 mi (9,975.35 km) |
| Mercer Island to Ortahisar | 6,317.14 mi (10,166.46 km) |
| Mercer Island to Ortakent | 6,291.85 mi (10,125.76 km) |
| Mercer Island to Ortaklar | 6,245.08 mi (10,050.49 km) |
| Mercer Island to Ortakoy | 6,297.49 mi (10,134.83 km) |
| Mercer Island to Ortakoy | 6,211.85 mi (9,997.01 km) |
| Mercer Island to Osmaneli | 6,128.19 mi (9,862.37 km) |
| Mercer Island to Osmaniye | 6,439.70 mi (10,363.70 km) |
| Mercer Island to Ozdere | 6,229.45 mi (10,025.32 km) |
| Mercer Island to Palu | 6,376.00 mi (10,261.18 km) |
| Mercer Island to Pamukkale | 6,272.16 mi (10,094.06 km) |
| Mercer Island to Patnos | 6,369.73 mi (10,251.09 km) |
| Mercer Island to Pazar | 6,227.18 mi (10,021.68 km) |
| Mercer Island to Pazarcik | 6,426.08 mi (10,341.78 km) |
