| Most to Caguas (Puerto Rico) | 4,804.15 mi (7,731.54 km) |
| Most to Cahokia (Illinois) | 4,750.78 mi (7,645.65 km) |
| Most to Calabasas (California) | 5,906.52 mi (9,505.63 km) |
| Most to Caldwell (Idaho) | 5,279.59 mi (8,496.68 km) |
| Most to Caledonia (Wisconsin) | 4,453.77 mi (7,167.65 km) |
| Most to Calera (Alabama) | 4,905.06 mi (7,893.93 km) |
| Most to Calexico (California) | 5,905.85 mi (9,504.54 km) |
| Most to Calhoun (Georgia) | 4,765.58 mi (7,669.47 km) |
| Most to California (Maryland) | 4,249.60 mi (6,839.07 km) |
| Most to California City (California) | 5,822.97 mi (9,371.17 km) |
| Most to Callaway (Florida) | 5,014.20 mi (8,069.57 km) |
| Most to Calumet City (Illinois) | 4,501.62 mi (7,244.66 km) |
| Most to Calverton (Maryland) | 4,231.11 mi (6,809.31 km) |
| Most to Camano (Washington) | 5,137.98 mi (8,268.78 km) |
| Most to Camarillo (California) | 5,911.08 mi (9,512.96 km) |
