| Cwmbran to Carson (California) | 5,352.43 mi (8,613.91 km) |
| Cwmbran to Carson City (Nevada) | 5,099.95 mi (8,207.57 km) |
| Cwmbran to Carteret (New Jersey) | 3,354.25 mi (5,398.14 km) |
| Cwmbran to Cartersville (Georgia) | 4,082.14 mi (6,569.56 km) |
| Cwmbran to Carthage (Missouri) | 4,315.45 mi (6,945.05 km) |
| Cwmbran to Cary (Illinois) | 3,840.64 mi (6,180.92 km) |
| Cwmbran to Cary (North Carolina) | 3,759.07 mi (6,049.63 km) |
| Cwmbran to Casa de Oro-Mount Helix (California) | 5,370.04 mi (8,642.24 km) |
| Cwmbran to Casa Grande (Arizona) | 5,182.42 mi (8,340.30 km) |
| Cwmbran to Casas Adobes (Arizona) | 5,186.71 mi (8,347.20 km) |
| Cwmbran to Cascades (Virginia) | 3,551.30 mi (5,715.27 km) |
| Cwmbran to Casper (Wyoming) | 4,464.75 mi (7,185.31 km) |
| Cwmbran to Casselberry (Florida) | 4,206.75 mi (6,770.12 km) |
| Cwmbran to Castaic (California) | 5,328.32 mi (8,575.11 km) |
| Cwmbran to Castle Pines (Colorado) | 4,588.86 mi (7,385.06 km) |
