| Rockville to Kingsville (Texas) | 1,432.99 mi (2,306.17 km) |
| Rockville to Kinston (North Carolina) | 264.26 mi (425.29 km) |
| Rockville to Kirkland (Washington) | 2,303.92 mi (3,707.79 km) |
| Rockville to Kirksville (Missouri) | 822.99 mi (1,324.48 km) |
| Rockville to Kirkwood (Missouri) | 714.18 mi (1,149.37 km) |
| Rockville to Kiryas Joel (New York) | 221.78 mi (356.92 km) |
| Rockville to Kissimmee (Florida) | 783.77 mi (1,261.35 km) |
| Rockville to Klamath Falls (Oregon) | 2,322.28 mi (3,737.35 km) |
| Rockville to Knightdale (North Carolina) | 239.07 mi (384.75 km) |
| Rockville to Knik-Fairview (Alaska) | 3,335.10 mi (5,367.33 km) |
| Rockville to Knoxville (Tennessee) | 429.83 mi (691.74 km) |
| Rockville to Kokomo (Indiana) | 485.69 mi (781.64 km) |
| Rockville to Kuna (Idaho) | 2,040.58 mi (3,283.99 km) |
| Rockville to Kyle (Texas) | 1,332.11 mi (2,143.82 km) |
| Rockville to La Cañada Flintridge (California) | 2,280.63 mi (3,670.32 km) |
