| Gaithersburg to Central Point (Oregon) | 2,373.38 mi (3,819.58 km) |
| Gaithersburg to Centralia (Illinois) | 642.00 mi (1,033.20 km) |
| Gaithersburg to Centralia (Washington) | 2,338.78 mi (3,763.91 km) |
| Gaithersburg to Centreville (Virginia) | 23.75 mi (38.23 km) |
| Gaithersburg to Ceres (California) | 2,349.34 mi (3,780.89 km) |
| Gaithersburg to Cerritos (California) | 2,278.69 mi (3,667.20 km) |
| Gaithersburg to Chalco (Nebraska) | 1,007.12 mi (1,620.80 km) |
| Gaithersburg to Chalmette (Louisiana) | 962.62 mi (1,549.19 km) |
| Gaithersburg to Chambersburg (Pennsylvania) | 59.90 mi (96.39 km) |
| Gaithersburg to Chamblee (Georgia) | 534.95 mi (860.91 km) |
| Gaithersburg to Champaign (Illinois) | 592.12 mi (952.92 km) |
| Gaithersburg to Champlin (Minnesota) | 925.37 mi (1,489.23 km) |
| Gaithersburg to Chandler (Arizona) | 1,960.51 mi (3,155.14 km) |
| Gaithersburg to Chanhassen (Minnesota) | 925.66 mi (1,489.71 km) |
| Gaithersburg to Channahon (Illinois) | 602.87 mi (970.23 km) |
