| Slough to Clarkston (Georgia) | 4,178.79 mi (6,725.11 km) |
| Slough to Clarksville (Indiana) | 4,023.95 mi (6,475.91 km) |
| Slough to Clarksville (Tennessee) | 4,170.06 mi (6,711.07 km) |
| Slough to Clawson (Michigan) | 3,727.44 mi (5,998.74 km) |
| Slough to Clay (Alabama) | 4,280.72 mi (6,889.15 km) |
| Slough to Clayton (California) | 5,316.25 mi (8,555.68 km) |
| Slough to Clayton (Missouri) | 4,186.75 mi (6,737.92 km) |
| Slough to Clayton (North Carolina) | 3,852.85 mi (6,200.56 km) |
| Slough to Clayton (Ohio) | 3,894.85 mi (6,268.15 km) |
| Slough to Clearfield (Utah) | 4,831.73 mi (7,775.91 km) |
| Slough to Clearlake (California) | 5,277.91 mi (8,493.98 km) |
| Slough to Clearwater (Florida) | 4,405.78 mi (7,090.42 km) |
| Slough to Cleburne (Texas) | 4,775.80 mi (7,685.91 km) |
| Slough to Clemmons (North Carolina) | 3,915.04 mi (6,300.65 km) |
| Slough to Clemson (South Carolina) | 4,078.36 mi (6,563.49 km) |
