| Alton to Clarkston (Georgia) | 4,170.66 mi (6,712.03 km) |
| Alton to Clarksville (Indiana) | 4,018.24 mi (6,466.74 km) |
| Alton to Clarksville (Tennessee) | 4,164.12 mi (6,701.50 km) |
| Alton to Clawson (Michigan) | 3,722.88 mi (5,991.40 km) |
| Alton to Clay (Alabama) | 4,273.34 mi (6,877.28 km) |
| Alton to Clayton (California) | 5,322.49 mi (8,565.72 km) |
| Alton to Clayton (Missouri) | 4,182.66 mi (6,731.34 km) |
| Alton to Clayton (North Carolina) | 3,843.58 mi (6,185.65 km) |
| Alton to Clayton (Ohio) | 3,889.38 mi (6,259.36 km) |
| Alton to Clearfield (Utah) | 4,835.63 mi (7,782.20 km) |
| Alton to Clearlake (California) | 5,284.69 mi (8,504.88 km) |
| Alton to Clearwater (Florida) | 4,394.85 mi (7,072.83 km) |
| Alton to Cleburne (Texas) | 4,771.61 mi (7,679.17 km) |
| Alton to Clemmons (North Carolina) | 3,906.58 mi (6,287.03 km) |
| Alton to Clemson (South Carolina) | 4,070.11 mi (6,550.22 km) |
