| Pontneddfechan to Cicero (Illinois) | 3,813.71 mi (6,137.58 km) |
| Pontneddfechan to Cimarron Hills (Colorado) | 4,589.91 mi (7,386.74 km) |
| Pontneddfechan to Cincinnati (Ohio) | 3,809.97 mi (6,131.56 km) |
| Pontneddfechan to Cinco Ranch (Texas) | 4,721.35 mi (7,598.28 km) |
| Pontneddfechan to Circleville (Ohio) | 3,725.78 mi (5,996.07 km) |
| Pontneddfechan to Citrus (California) | 5,301.34 mi (8,531.68 km) |
| Pontneddfechan to Citrus Heights (California) | 5,150.85 mi (8,289.49 km) |
| Pontneddfechan to Citrus Park (Florida) | 4,263.24 mi (6,861.03 km) |
| Pontneddfechan to Claiborne (Louisiana) | 4,436.47 mi (7,139.81 km) |
| Pontneddfechan to Claremont (California) | 5,295.02 mi (8,521.51 km) |
| Pontneddfechan to Claremont (New Hampshire) | 3,134.97 mi (5,045.25 km) |
| Pontneddfechan to Claremore (Oklahoma) | 4,381.59 mi (7,051.48 km) |
| Pontneddfechan to Clarksburg (Maryland) | 3,513.11 mi (5,653.81 km) |
| Pontneddfechan to Clarksburg (West Virginia) | 3,635.04 mi (5,850.04 km) |
| Pontneddfechan to Clarksdale (Mississippi) | 4,288.89 mi (6,902.30 km) |
