| Fort Oglethorpe to Cadillac (Michigan) | 643.84 mi (1,036.16 km) |
| Fort Oglethorpe to Caguas (Puerto Rico) | 1,649.14 mi (2,654.03 km) |
| Fort Oglethorpe to Cahokia (Illinois) | 370.85 mi (596.82 km) |
| Fort Oglethorpe to Calabasas (California) | 1,894.26 mi (3,048.52 km) |
| Fort Oglethorpe to Caldwell (Idaho) | 1,771.79 mi (2,851.42 km) |
| Fort Oglethorpe to Caledonia (Wisconsin) | 561.58 mi (903.77 km) |
| Fort Oglethorpe to Calera (Alabama) | 151.47 mi (243.76 km) |
| Fort Oglethorpe to Calexico (California) | 1,736.89 mi (2,795.25 km) |
| Fort Oglethorpe to Calhoun (Georgia) | 35.11 mi (56.50 km) |
| Fort Oglethorpe to California (Maryland) | 537.83 mi (865.55 km) |
| Fort Oglethorpe to California City (California) | 1,837.23 mi (2,956.73 km) |
| Fort Oglethorpe to Callaway (Florida) | 331.93 mi (534.19 km) |
| Fort Oglethorpe to Calumet City (Illinois) | 478.22 mi (769.63 km) |
| Fort Oglethorpe to Calverton (Maryland) | 539.02 mi (867.47 km) |
| Fort Oglethorpe to Camano (Washington) | 2,104.43 mi (3,386.75 km) |
