| Cwmbran to Clarkston (Georgia) | 4,076.18 mi (6,559.97 km) |
| Cwmbran to Clarksville (Indiana) | 3,923.54 mi (6,314.32 km) |
| Cwmbran to Clarksville (Tennessee) | 4,069.40 mi (6,549.07 km) |
| Cwmbran to Clawson (Michigan) | 3,628.30 mi (5,839.18 km) |
| Cwmbran to Clay (Alabama) | 4,178.72 mi (6,724.99 km) |
| Cwmbran to Clayton (California) | 5,235.82 mi (8,426.23 km) |
| Cwmbran to Clayton (Missouri) | 4,088.16 mi (6,579.26 km) |
| Cwmbran to Clayton (North Carolina) | 3,749.44 mi (6,034.14 km) |
| Cwmbran to Clayton (Ohio) | 3,794.69 mi (6,106.96 km) |
| Cwmbran to Clearfield (Utah) | 4,746.24 mi (7,638.33 km) |
| Cwmbran to Clearlake (California) | 5,198.73 mi (8,366.55 km) |
| Cwmbran to Clearwater (Florida) | 4,301.50 mi (6,922.59 km) |
| Cwmbran to Cleburne (Texas) | 4,677.09 mi (7,527.06 km) |
| Cwmbran to Clemmons (North Carolina) | 3,812.18 mi (6,135.11 km) |
| Cwmbran to Clemson (South Carolina) | 3,975.66 mi (6,398.21 km) |
