| Gaithersburg to Kenosha (Wisconsin) | 605.59 mi (974.60 km) |
| Gaithersburg to Kent (Ohio) | 259.51 mi (417.64 km) |
| Gaithersburg to Kent (Washington) | 2,300.63 mi (3,702.50 km) |
| Gaithersburg to Kentwood (Michigan) | 507.60 mi (816.90 km) |
| Gaithersburg to Kerman (California) | 2,319.48 mi (3,732.84 km) |
| Gaithersburg to Kernersville (North Carolina) | 261.62 mi (421.03 km) |
| Gaithersburg to Kerrville (Texas) | 1,391.13 mi (2,238.82 km) |
| Gaithersburg to Kettering (Maryland) | 28.41 mi (45.72 km) |
| Gaithersburg to Kettering (Ohio) | 372.18 mi (598.97 km) |
| Gaithersburg to Kewanee (Illinois) | 685.95 mi (1,103.94 km) |
| Gaithersburg to Key Biscayne (Florida) | 944.54 mi (1,520.09 km) |
| Gaithersburg to Key Largo (Florida) | 985.88 mi (1,586.62 km) |
| Gaithersburg to Key West (Florida) | 1,041.34 mi (1,675.88 km) |
| Gaithersburg to Keystone (Florida) | 820.56 mi (1,320.56 km) |
| Gaithersburg to Kihei (Hawaii) | 4,763.62 mi (7,666.30 km) |
