| Apex to Caguas (Puerto Rico) | 1,440.86 mi (2,318.83 km) |
| Apex to Cahokia (Illinois) | 652.33 mi (1,049.82 km) |
| Apex to Calabasas (California) | 2,241.38 mi (3,607.16 km) |
| Apex to Caldwell (Idaho) | 2,062.90 mi (3,319.91 km) |
| Apex to Caledonia (Wisconsin) | 685.41 mi (1,103.06 km) |
| Apex to Calera (Alabama) | 482.97 mi (777.26 km) |
| Apex to Calexico (California) | 2,090.99 mi (3,365.13 km) |
| Apex to Calhoun (Georgia) | 353.13 mi (568.31 km) |
| Apex to California (Maryland) | 220.99 mi (355.64 km) |
| Apex to California City (California) | 2,180.90 mi (3,509.82 km) |
| Apex to Callaway (Florida) | 546.79 mi (879.97 km) |
| Apex to Calumet City (Illinois) | 619.63 mi (997.20 km) |
| Apex to Calverton (Maryland) | 253.44 mi (407.87 km) |
| Apex to Camano (Washington) | 2,362.40 mi (3,801.92 km) |
| Apex to Camarillo (California) | 2,260.03 mi (3,637.17 km) |
