| Apex to Kinston (North Carolina) | 78.42 mi (126.20 km) |
| Apex to Kirkland (Washington) | 2,347.38 mi (3,777.74 km) |
| Apex to Kirksville (Missouri) | 806.75 mi (1,298.33 km) |
| Apex to Kirkwood (Missouri) | 665.19 mi (1,070.53 km) |
| Apex to Kiryas Joel (New York) | 463.91 mi (746.60 km) |
| Apex to Kissimmee (Florida) | 533.78 mi (859.04 km) |
| Apex to Klamath Falls (Oregon) | 2,322.62 mi (3,737.90 km) |
| Apex to Knightdale (North Carolina) | 21.68 mi (34.90 km) |
| Apex to Knik-Fairview (Alaska) | 3,464.74 mi (5,575.96 km) |
| Apex to Knoxville (Tennessee) | 284.72 mi (458.22 km) |
| Apex to Kokomo (Indiana) | 512.35 mi (824.55 km) |
| Apex to Kuna (Idaho) | 2,049.15 mi (3,297.79 km) |
| Apex to Kyle (Texas) | 1,169.88 mi (1,882.74 km) |
| Apex to La Cañada Flintridge (California) | 2,214.19 mi (3,563.39 km) |
| Apex to La Crescenta-Montrose (California) | 2,215.75 mi (3,565.91 km) |
