| Mercer Island to Karditsa | 6,038.91 mi (9,718.69 km) |
| Mercer Island to Kastoria | 5,952.32 mi (9,579.33 km) |
| Mercer Island to Katerini | 5,993.89 mi (9,646.24 km) |
| Mercer Island to Keratsini | 6,163.60 mi (9,919.36 km) |
| Mercer Island to Kerkyra | 5,979.56 mi (9,623.17 km) |
| Mercer Island to Kiato | 6,142.73 mi (9,885.77 km) |
| Mercer Island to Kifisia | 6,160.26 mi (9,913.98 km) |
| Mercer Island to Kilkis | 5,955.74 mi (9,584.84 km) |
| Mercer Island to Komotini | 5,998.01 mi (9,652.86 km) |
| Mercer Island to Korinthos | 6,151.04 mi (9,899.14 km) |
| Mercer Island to Koropi | 6,173.15 mi (9,934.72 km) |
| Mercer Island to Korydallos | 6,163.23 mi (9,918.76 km) |
| Mercer Island to Kos | 6,307.19 mi (10,150.43 km) |
| Mercer Island to Kozani | 5,976.90 mi (9,618.90 km) |
| Mercer Island to Lagos | 5,992.73 mi (9,644.37 km) |
