| Leiden to Kinston (North Carolina) | 4,030.15 mi (6,485.90 km) |
| Leiden to Kirkland (Washington) | 4,856.18 mi (7,815.27 km) |
| Leiden to Kirksville (Missouri) | 4,361.33 mi (7,018.88 km) |
| Leiden to Kirkwood (Missouri) | 4,364.31 mi (7,023.67 km) |
| Leiden to Kiryas Joel (New York) | 3,610.03 mi (5,809.78 km) |
| Leiden to Kissimmee (Florida) | 4,532.97 mi (7,295.10 km) |
| Leiden to Klamath Falls (Oregon) | 5,169.21 mi (8,319.05 km) |
| Leiden to Knightdale (North Carolina) | 4,041.41 mi (6,504.02 km) |
| Leiden to Knik-Fairview (Alaska) | 4,455.26 mi (7,170.04 km) |
| Leiden to Knoxville (Tennessee) | 4,248.30 mi (6,836.98 km) |
| Leiden to Kokomo (Indiana) | 4,111.33 mi (6,616.55 km) |
| Leiden to Kuna (Idaho) | 4,949.63 mi (7,965.65 km) |
| Leiden to Kyle (Texas) | 5,091.15 mi (8,193.41 km) |
| Leiden to La Cañada Flintridge (California) | 5,542.12 mi (8,919.18 km) |
| Leiden to La Crescenta-Montrose (California) | 5,541.85 mi (8,918.74 km) |
