| Apex to Carson (California) | 2,223.70 mi (3,578.69 km) |
| Apex to Carson City (Nevada) | 2,235.90 mi (3,598.34 km) |
| Apex to Carteret (New Jersey) | 420.01 mi (675.94 km) |
| Apex to Cartersville (Georgia) | 352.46 mi (567.23 km) |
| Apex to Carthage (Missouri) | 863.37 mi (1,389.46 km) |
| Apex to Cary (Illinois) | 673.53 mi (1,083.94 km) |
| Apex to Cary (North Carolina) | 5.06 mi (8.14 km) |
| Apex to Casa de Oro-Mount Helix (California) | 2,171.81 mi (3,495.19 km) |
| Apex to Casa Grande (Arizona) | 1,878.13 mi (3,022.56 km) |
| Apex to Casas Adobes (Arizona) | 1,846.61 mi (2,971.83 km) |
| Apex to Cascades (Virginia) | 243.65 mi (392.11 km) |
| Apex to Casper (Wyoming) | 1,539.94 mi (2,478.30 km) |
| Apex to Casselberry (Florida) | 508.39 mi (818.17 km) |
| Apex to Castaic (California) | 2,233.52 mi (3,594.50 km) |
| Apex to Castle Pines (Colorado) | 1,441.26 mi (2,319.48 km) |
