| Pontneddfechan to Cloverly (Maryland) | 3,507.43 mi (5,644.67 km) |
| Pontneddfechan to Clovis (California) | 5,206.58 mi (8,379.18 km) |
| Pontneddfechan to Clovis (New Mexico) | 4,764.94 mi (7,668.44 km) |
| Pontneddfechan to Clute (Texas) | 4,743.65 mi (7,634.17 km) |
| Pontneddfechan to Coachella (California) | 5,266.71 mi (8,475.95 km) |
| Pontneddfechan to Coalinga (California) | 5,265.82 mi (8,474.52 km) |
| Pontneddfechan to Coamo (Puerto Rico) | 4,086.38 mi (6,576.40 km) |
| Pontneddfechan to Coatesville (Pennsylvania) | 3,420.32 mi (5,504.48 km) |
| Pontneddfechan to Cockeysville (Maryland) | 3,475.68 mi (5,593.57 km) |
| Pontneddfechan to Cocoa (Florida) | 4,172.18 mi (6,714.48 km) |
| Pontneddfechan to Cocoa Beach (Florida) | 4,168.72 mi (6,708.91 km) |
| Pontneddfechan to Coconut Creek (Florida) | 4,252.67 mi (6,844.00 km) |
| Pontneddfechan to Coeur d'Alene (Idaho) | 4,516.53 mi (7,268.65 km) |
| Pontneddfechan to Cohoes (New York) | 3,215.52 mi (5,174.88 km) |
| Pontneddfechan to Cold Springs (Nevada) | 5,054.11 mi (8,133.81 km) |
