| Apex to Clermont (Florida) | 523.96 mi (843.23 km) |
| Apex to Cleveland (Mississippi) | 686.39 mi (1,104.64 km) |
| Apex to Cleveland (Ohio) | 425.31 mi (684.47 km) |
| Apex to Cleveland (Tennessee) | 339.51 mi (546.39 km) |
| Apex to Cleveland Heights (Ohio) | 425.36 mi (684.55 km) |
| Apex to Cliffside Park (New Jersey) | 440.68 mi (709.21 km) |
| Apex to Clifton (Colorado) | 1,633.06 mi (2,628.15 km) |
| Apex to Clifton (New Jersey) | 437.46 mi (704.03 km) |
| Apex to Clinton (Iowa) | 743.01 mi (1,195.76 km) |
| Apex to Clinton (Maryland) | 235.44 mi (378.90 km) |
| Apex to Clinton (Mississippi) | 696.01 mi (1,120.12 km) |
| Apex to Clinton (Utah) | 1,823.42 mi (2,934.52 km) |
| Apex to Clive (Iowa) | 900.39 mi (1,449.04 km) |
| Apex to Cloquet (Minnesota) | 1,035.47 mi (1,666.43 km) |
| Apex to Cloverleaf (Texas) | 1,030.27 mi (1,658.06 km) |
