| Cahokia to Clarkston (Georgia) | 466.20 mi (750.28 km) |
| Cahokia to Clarksville (Indiana) | 239.32 mi (385.15 km) |
| Cahokia to Clarksville (Tennessee) | 207.76 mi (334.36 km) |
| Cahokia to Clawson (Michigan) | 459.60 mi (739.65 km) |
| Cahokia to Clay (Alabama) | 390.96 mi (629.19 km) |
| Cahokia to Clayton (California) | 1,714.66 mi (2,759.48 km) |
| Cahokia to Clayton (Missouri) | 9.83 mi (15.82 km) |
| Cahokia to Clayton (North Carolina) | 676.18 mi (1,088.21 km) |
| Cahokia to Clayton (Ohio) | 325.79 mi (524.31 km) |
| Cahokia to Clearfield (Utah) | 1,169.03 mi (1,881.38 km) |
| Cahokia to Clearlake (California) | 1,739.34 mi (2,799.20 km) |
| Cahokia to Clearwater (Florida) | 846.92 mi (1,362.99 km) |
| Cahokia to Cleburne (Texas) | 591.04 mi (951.19 km) |
| Cahokia to Clemmons (North Carolina) | 565.66 mi (910.34 km) |
| Cahokia to Clemson (South Carolina) | 488.41 mi (786.02 km) |
