| Mercer Island to Jozefow | 5,218.65 mi (8,398.60 km) |
| Mercer Island to Kalisz | 5,184.26 mi (8,343.26 km) |
| Mercer Island to Kamien Pomorski | 4,984.83 mi (8,022.31 km) |
| Mercer Island to Kamienna Gora | 5,203.92 mi (8,374.89 km) |
| Mercer Island to Karczew | 5,222.09 mi (8,404.13 km) |
| Mercer Island to Kartuzy | 5,027.38 mi (8,090.79 km) |
| Mercer Island to Katowice | 5,294.67 mi (8,520.95 km) |
| Mercer Island to Kedzierzyn-Kozle | 5,273.71 mi (8,487.21 km) |
| Mercer Island to Kepno | 5,211.73 mi (8,387.47 km) |
| Mercer Island to Ketrzyn | 5,098.70 mi (8,205.57 km) |
| Mercer Island to Kety | 5,321.35 mi (8,563.89 km) |
| Mercer Island to Kielce | 5,286.97 mi (8,508.55 km) |
| Mercer Island to Kielczow | 5,204.86 mi (8,376.41 km) |
| Mercer Island to Klobuck | 5,252.64 mi (8,453.31 km) |
| Mercer Island to Klodzko | 5,237.84 mi (8,429.49 km) |
