| Pontneddfechan to Carson (California) | 5,329.20 mi (8,576.52 km) |
| Pontneddfechan to Carson City (Nevada) | 5,077.50 mi (8,171.45 km) |
| Pontneddfechan to Carteret (New Jersey) | 3,328.97 mi (5,357.45 km) |
| Pontneddfechan to Cartersville (Georgia) | 4,056.86 mi (6,528.88 km) |
| Pontneddfechan to Carthage (Missouri) | 4,290.52 mi (6,904.93 km) |
| Pontneddfechan to Cary (Illinois) | 3,815.75 mi (6,140.86 km) |
| Pontneddfechan to Cary (North Carolina) | 3,733.80 mi (6,008.97 km) |
| Pontneddfechan to Casa de Oro-Mount Helix (California) | 5,346.55 mi (8,604.44 km) |
| Pontneddfechan to Casa Grande (Arizona) | 5,158.40 mi (8,301.64 km) |
| Pontneddfechan to Casas Adobes (Arizona) | 5,162.57 mi (8,308.35 km) |
| Pontneddfechan to Cascades (Virginia) | 3,526.02 mi (5,674.58 km) |
| Pontneddfechan to Casper (Wyoming) | 4,441.21 mi (7,147.43 km) |
| Pontneddfechan to Casselberry (Florida) | 4,181.61 mi (6,729.66 km) |
| Pontneddfechan to Castaic (California) | 5,305.20 mi (8,537.90 km) |
| Pontneddfechan to Castle Pines (Colorado) | 4,564.82 mi (7,346.37 km) |
