| Apex to Cicero (Illinois) | 637.99 mi (1,026.74 km) |
| Apex to Cimarron Hills (Colorado) | 1,431.10 mi (2,303.14 km) |
| Apex to Cincinnati (Ohio) | 388.75 mi (625.62 km) |
| Apex to Cinco Ranch (Texas) | 1,063.12 mi (1,710.93 km) |
| Apex to Circleville (Ohio) | 348.13 mi (560.25 km) |
| Apex to Citrus (California) | 2,198.53 mi (3,538.20 km) |
| Apex to Citrus Heights (California) | 2,322.18 mi (3,737.19 km) |
| Apex to Citrus Park (Florida) | 571.04 mi (919.00 km) |
| Apex to Claiborne (Louisiana) | 792.43 mi (1,275.30 km) |
| Apex to Claremont (California) | 2,188.73 mi (3,522.42 km) |
| Apex to Claremont (New Hampshire) | 632.82 mi (1,018.43 km) |
| Apex to Claremore (Oklahoma) | 934.96 mi (1,504.67 km) |
| Apex to Clarksburg (Maryland) | 257.45 mi (414.33 km) |
| Apex to Clarksburg (West Virginia) | 258.63 mi (416.22 km) |
| Apex to Clarksdale (Mississippi) | 670.22 mi (1,078.61 km) |
