| Llantwit Major to Clarkston (Georgia) | 4,062.34 mi (6,537.71 km) |
| Llantwit Major to Clarksville (Indiana) | 3,911.61 mi (6,295.13 km) |
| Llantwit Major to Clarksville (Tennessee) | 4,057.28 mi (6,529.56 km) |
| Llantwit Major to Clawson (Michigan) | 3,617.31 mi (5,821.50 km) |
| Llantwit Major to Clay (Alabama) | 4,165.46 mi (6,703.66 km) |
| Llantwit Major to Clayton (California) | 5,233.83 mi (8,423.04 km) |
| Llantwit Major to Clayton (Missouri) | 4,077.53 mi (6,562.14 km) |
| Llantwit Major to Clayton (North Carolina) | 3,734.74 mi (6,010.49 km) |
| Llantwit Major to Clayton (Ohio) | 3,782.97 mi (6,088.09 km) |
| Llantwit Major to Clearfield (Utah) | 4,742.25 mi (7,631.92 km) |
| Llantwit Major to Clearlake (California) | 5,197.22 mi (8,364.12 km) |
| Llantwit Major to Clearwater (Florida) | 4,285.53 mi (6,896.90 km) |
| Llantwit Major to Cleburne (Texas) | 4,666.34 mi (7,509.75 km) |
| Llantwit Major to Clemmons (North Carolina) | 3,798.09 mi (6,112.44 km) |
| Llantwit Major to Clemson (South Carolina) | 3,961.74 mi (6,375.80 km) |
