| Round Lake Beach to Kingsville (Texas) | 1,165.26 mi (1,875.31 km) |
| Round Lake Beach to Kinston (North Carolina) | 747.03 mi (1,202.22 km) |
| Round Lake Beach to Kirkland (Washington) | 1,691.55 mi (2,722.29 km) |
| Round Lake Beach to Kirksville (Missouri) | 277.67 mi (446.87 km) |
| Round Lake Beach to Kirkwood (Missouri) | 289.90 mi (466.55 km) |
| Round Lake Beach to Kiryas Joel (New York) | 718.79 mi (1,156.78 km) |
| Round Lake Beach to Kissimmee (Florida) | 1,041.62 mi (1,676.32 km) |
| Round Lake Beach to Klamath Falls (Oregon) | 1,710.52 mi (2,752.82 km) |
| Round Lake Beach to Knightdale (North Carolina) | 685.79 mi (1,103.67 km) |
| Round Lake Beach to Knik-Fairview (Alaska) | 2,798.91 mi (4,504.41 km) |
| Round Lake Beach to Knoxville (Tennessee) | 494.93 mi (796.51 km) |
| Round Lake Beach to Kokomo (Indiana) | 166.58 mi (268.08 km) |
| Round Lake Beach to Kuna (Idaho) | 1,427.35 mi (2,297.09 km) |
| Round Lake Beach to Kyle (Texas) | 1,013.89 mi (1,631.70 km) |
| Round Lake Beach to La Cañada Flintridge (California) | 1,717.34 mi (2,763.79 km) |
