| Cahokia to Carson (California) | 1,592.55 mi (2,562.96 km) |
| Cahokia to Carson City (Nevada) | 1,584.31 mi (2,549.70 km) |
| Cahokia to Carteret (New Jersey) | 859.64 mi (1,383.46 km) |
| Cahokia to Cartersville (Georgia) | 426.45 mi (686.30 km) |
| Cahokia to Carthage (Missouri) | 246.22 mi (396.25 km) |
| Cahokia to Cary (Illinois) | 271.72 mi (437.29 km) |
| Cahokia to Cary (North Carolina) | 653.78 mi (1,052.16 km) |
| Cahokia to Casa de Oro-Mount Helix (California) | 1,550.16 mi (2,494.75 km) |
| Cahokia to Casa Grande (Arizona) | 1,268.49 mi (2,041.44 km) |
| Cahokia to Casas Adobes (Arizona) | 1,245.39 mi (2,004.27 km) |
| Cahokia to Cascades (Virginia) | 688.98 mi (1,108.81 km) |
| Cahokia to Casper (Wyoming) | 893.91 mi (1,438.61 km) |
| Cahokia to Casselberry (Florida) | 852.19 mi (1,371.47 km) |
| Cahokia to Castaic (California) | 1,598.17 mi (2,572.00 km) |
| Cahokia to Castle Pines (Colorado) | 790.26 mi (1,271.80 km) |
