| Walnut Park to Kingsville (Texas) | 1,286.07 mi (2,069.72 km) |
| Walnut Park to Kinston (North Carolina) | 2,295.57 mi (3,694.36 km) |
| Walnut Park to Kirkland (Washington) | 970.81 mi (1,562.37 km) |
| Walnut Park to Kirksville (Missouri) | 1,471.77 mi (2,368.58 km) |
| Walnut Park to Kirkwood (Missouri) | 1,574.71 mi (2,534.25 km) |
| Walnut Park to Kiryas Joel (New York) | 2,436.12 mi (3,920.56 km) |
| Walnut Park to Kissimmee (Florida) | 2,199.56 mi (3,539.85 km) |
| Walnut Park to Klamath Falls (Oregon) | 601.81 mi (968.51 km) |
| Walnut Park to Knightdale (North Carolina) | 2,239.78 mi (3,604.57 km) |
| Walnut Park to Knik-Fairview (Alaska) | 2,351.30 mi (3,784.04 km) |
| Walnut Park to Knoxville (Tennessee) | 1,935.47 mi (3,114.83 km) |
| Walnut Park to Kokomo (Indiana) | 1,811.21 mi (2,914.86 km) |
| Walnut Park to Kuna (Idaho) | 665.05 mi (1,070.29 km) |
| Walnut Park to Kyle (Texas) | 1,220.88 mi (1,964.81 km) |
| Walnut Park to La Cañada Flintridge (California) | 16.73 mi (26.93 km) |
