| Mercer Island to Krosno Odrzanskie | 5,108.78 mi (8,221.79 km) |
| Mercer Island to Krotoszyn | 5,176.41 mi (8,330.63 km) |
| Mercer Island to Kruszwica | 5,132.08 mi (8,259.28 km) |
| Mercer Island to Krynica | 5,384.78 mi (8,665.96 km) |
| Mercer Island to Krzeszowice | 5,314.74 mi (8,553.25 km) |
| Mercer Island to Kudowa-Zdroj | 5,229.23 mi (8,415.63 km) |
| Mercer Island to Kutno | 5,178.83 mi (8,334.52 km) |
| Mercer Island to Kwidzyn | 5,077.55 mi (8,171.53 km) |
| Mercer Island to Lancut | 5,366.71 mi (8,636.88 km) |
| Mercer Island to Lapy | 5,193.22 mi (8,357.68 km) |
| Mercer Island to Lask | 5,214.52 mi (8,391.96 km) |
| Mercer Island to Laziska Gorne | 5,298.73 mi (8,527.48 km) |
| Mercer Island to Lebork | 5,005.85 mi (8,056.13 km) |
| Mercer Island to Leczna | 5,299.92 mi (8,529.40 km) |
| Mercer Island to Leczyca | 5,187.16 mi (8,347.93 km) |
