| Gaithersburg to Crawfordsville (Indiana) | 519.20 mi (835.57 km) |
| Gaithersburg to Crest Hill (Illinois) | 597.61 mi (961.76 km) |
| Gaithersburg to Crestview (Florida) | 784.68 mi (1,262.82 km) |
| Gaithersburg to Crestwood (Illinois) | 580.04 mi (933.49 km) |
| Gaithersburg to Crestwood (Missouri) | 708.95 mi (1,140.95 km) |
| Gaithersburg to Creve Coeur (Missouri) | 711.53 mi (1,145.09 km) |
| Gaithersburg to Crofton (Maryland) | 29.78 mi (47.92 km) |
| Gaithersburg to Crossville (Tennessee) | 481.11 mi (774.26 km) |
| Gaithersburg to Crowley (Louisiana) | 1,056.77 mi (1,700.70 km) |
| Gaithersburg to Crowley (Texas) | 1,212.35 mi (1,951.09 km) |
| Gaithersburg to Crown Point (Indiana) | 556.50 mi (895.59 km) |
| Gaithersburg to Crystal (Minnesota) | 920.72 mi (1,481.76 km) |
| Gaithersburg to Crystal Lake (Illinois) | 620.24 mi (998.18 km) |
| Gaithersburg to Cudahy (California) | 2,282.43 mi (3,673.21 km) |
| Gaithersburg to Cudahy (Wisconsin) | 613.77 mi (987.76 km) |
