| Gaithersburg to Camarillo (California) | 2,321.37 mi (3,735.89 km) |
| Gaithersburg to Camas (Washington) | 2,319.34 mi (3,732.62 km) |
| Gaithersburg to Cambridge (Maryland) | 73.14 mi (117.71 km) |
| Gaithersburg to Cambridge (Massachusetts) | 389.58 mi (626.98 km) |
| Gaithersburg to Camden (Arkansas) | 949.53 mi (1,528.12 km) |
| Gaithersburg to Camden (New Jersey) | 125.13 mi (201.37 km) |
| Gaithersburg to Cameron Park (California) | 2,330.53 mi (3,750.62 km) |
| Gaithersburg to Camp Pendleton South (California) | 2,258.72 mi (3,635.07 km) |
| Gaithersburg to Camp Springs (Maryland) | 27.68 mi (44.54 km) |
| Gaithersburg to Camp Verde (Arizona) | 1,929.19 mi (3,104.74 km) |
| Gaithersburg to Campbell (California) | 2,407.72 mi (3,874.85 km) |
| Gaithersburg to Campbellsville (Kentucky) | 458.44 mi (737.79 km) |
| Gaithersburg to Campton Hills (Illinois) | 619.02 mi (996.21 km) |
| Gaithersburg to Canby (Oregon) | 2,333.99 mi (3,756.19 km) |
| Gaithersburg to Candelaria (Puerto Rico) | 1,576.54 mi (2,537.19 km) |
