| Gaithersburg to Kinston (North Carolina) | 267.51 mi (430.52 km) |
| Gaithersburg to Kirkland (Washington) | 2,299.47 mi (3,700.63 km) |
| Gaithersburg to Kirksville (Missouri) | 819.32 mi (1,318.56 km) |
| Gaithersburg to Kirkwood (Missouri) | 711.01 mi (1,144.26 km) |
| Gaithersburg to Kiryas Joel (New York) | 221.47 mi (356.42 km) |
| Gaithersburg to Kissimmee (Florida) | 786.08 mi (1,265.08 km) |
| Gaithersburg to Klamath Falls (Oregon) | 2,318.16 mi (3,730.72 km) |
| Gaithersburg to Knightdale (North Carolina) | 241.49 mi (388.64 km) |
| Gaithersburg to Knik-Fairview (Alaska) | 3,330.41 mi (5,359.78 km) |
| Gaithersburg to Knoxville (Tennessee) | 428.77 mi (690.04 km) |
| Gaithersburg to Kokomo (Indiana) | 481.83 mi (775.43 km) |
| Gaithersburg to Kuna (Idaho) | 2,036.40 mi (3,277.28 km) |
| Gaithersburg to Kyle (Texas) | 1,330.55 mi (2,141.32 km) |
| Gaithersburg to La Cañada Flintridge (California) | 2,277.26 mi (3,664.90 km) |
| Gaithersburg to La Crescenta-Montrose (California) | 2,278.59 mi (3,667.03 km) |
