| Champaign to Clarkston (Georgia) | 488.94 mi (786.88 km) |
| Champaign to Clarksville (Indiana) | 182.56 mi (293.80 km) |
| Champaign to Clarksville (Tennessee) | 250.09 mi (402.48 km) |
| Champaign to Clawson (Michigan) | 314.05 mi (505.41 km) |
| Champaign to Clay (Alabama) | 452.93 mi (728.91 km) |
| Champaign to Clayton (California) | 1,801.95 mi (2,899.96 km) |
| Champaign to Clayton (Missouri) | 149.58 mi (240.73 km) |
| Champaign to Clayton (North Carolina) | 617.30 mi (993.45 km) |
| Champaign to Clayton (Ohio) | 209.47 mi (337.11 km) |
| Champaign to Clearfield (Utah) | 1,243.80 mi (2,001.70 km) |
| Champaign to Clearlake (California) | 1,821.19 mi (2,930.92 km) |
| Champaign to Clearwater (Florida) | 895.36 mi (1,440.94 km) |
| Champaign to Cleburne (Texas) | 738.64 mi (1,188.73 km) |
| Champaign to Clemmons (North Carolina) | 513.11 mi (825.78 km) |
| Champaign to Clemson (South Carolina) | 480.04 mi (772.54 km) |
