| Pontneddfechan to Clarkston (Georgia) | 4,050.90 mi (6,519.29 km) |
| Pontneddfechan to Clarksville (Indiana) | 3,898.35 mi (6,273.80 km) |
| Pontneddfechan to Clarksville (Tennessee) | 4,044.20 mi (6,508.51 km) |
| Pontneddfechan to Clawson (Michigan) | 3,603.23 mi (5,798.83 km) |
| Pontneddfechan to Clay (Alabama) | 4,153.45 mi (6,684.33 km) |
| Pontneddfechan to Clayton (California) | 5,213.52 mi (8,390.36 km) |
| Pontneddfechan to Clayton (Missouri) | 4,063.14 mi (6,539.00 km) |
| Pontneddfechan to Clayton (North Carolina) | 3,724.18 mi (5,993.49 km) |
| Pontneddfechan to Clayton (Ohio) | 3,769.53 mi (6,066.47 km) |
| Pontneddfechan to Clearfield (Utah) | 4,723.08 mi (7,601.07 km) |
| Pontneddfechan to Clearlake (California) | 5,176.66 mi (8,331.03 km) |
| Pontneddfechan to Clearwater (Florida) | 4,276.34 mi (6,882.10 km) |
| Pontneddfechan to Cleburne (Texas) | 4,652.06 mi (7,486.76 km) |
| Pontneddfechan to Clemmons (North Carolina) | 3,786.90 mi (6,094.42 km) |
| Pontneddfechan to Clemson (South Carolina) | 3,950.38 mi (6,357.52 km) |
