| Cahokia to Corinth (Mississippi) | 266.39 mi (428.71 km) |
| Cahokia to Corinth (Texas) | 537.41 mi (864.87 km) |
| Cahokia to Cornelius (North Carolina) | 555.32 mi (893.71 km) |
| Cahokia to Cornelius (Oregon) | 1,740.24 mi (2,800.64 km) |
| Cahokia to Corning (New York) | 733.01 mi (1,179.67 km) |
| Cahokia to Corona (California) | 1,554.71 mi (2,502.07 km) |
| Cahokia to Coronado (California) | 1,563.08 mi (2,515.53 km) |
| Cahokia to Corpus Christi (Texas) | 856.18 mi (1,377.88 km) |
| Cahokia to Corsicana (Texas) | 570.84 mi (918.68 km) |
| Cahokia to Cortland (New York) | 784.63 mi (1,262.74 km) |
| Cahokia to Corvallis (Oregon) | 1,747.66 mi (2,812.58 km) |
| Cahokia to Coshocton (Ohio) | 459.72 mi (739.85 km) |
| Cahokia to Costa Mesa (California) | 1,578.15 mi (2,539.79 km) |
| Cahokia to Coto de Caza (California) | 1,562.22 mi (2,514.15 km) |
| Cahokia to Cottage Grove (Minnesota) | 454.51 mi (731.47 km) |
