| Gaithersburg to Cold Springs (Nevada) | 2,261.05 mi (3,638.81 km) |
| Gaithersburg to Coldwater (Michigan) | 452.39 mi (728.05 km) |
| Gaithersburg to Colesville (Maryland) | 12.14 mi (19.54 km) |
| Gaithersburg to College (Alaska) | 3,254.01 mi (5,236.83 km) |
| Gaithersburg to College Park (Georgia) | 553.70 mi (891.09 km) |
| Gaithersburg to College Park (Maryland) | 17.79 mi (28.62 km) |
| Gaithersburg to College Station (Texas) | 1,229.03 mi (1,977.94 km) |
| Gaithersburg to Collegedale (Tennessee) | 515.48 mi (829.58 km) |
| Gaithersburg to Colleyville (Texas) | 1,191.60 mi (1,917.69 km) |
| Gaithersburg to Collierville (Tennessee) | 743.01 mi (1,195.76 km) |
| Gaithersburg to Collinsville (Illinois) | 688.01 mi (1,107.24 km) |
| Gaithersburg to Colonia (New Jersey) | 183.76 mi (295.74 km) |
| Gaithersburg to Colonial Heights (Virginia) | 129.56 mi (208.51 km) |
| Gaithersburg to Colonial Park (Pennsylvania) | 83.28 mi (134.02 km) |
| Gaithersburg to Colorado Springs (Colorado) | 1,473.55 mi (2,371.45 km) |
