| Llantwit Major to Carson (California) | 5,348.24 mi (8,607.16 km) |
| Llantwit Major to Carson City (Nevada) | 5,097.63 mi (8,203.84 km) |
| Llantwit Major to Carteret (New Jersey) | 3,340.33 mi (5,375.74 km) |
| Llantwit Major to Cartersville (Georgia) | 4,068.56 mi (6,547.71 km) |
| Llantwit Major to Carthage (Missouri) | 4,305.36 mi (6,928.80 km) |
| Llantwit Major to Cary (Illinois) | 3,830.78 mi (6,165.04 km) |
| Llantwit Major to Cary (North Carolina) | 3,744.50 mi (6,026.19 km) |
| Llantwit Major to Casa de Oro-Mount Helix (California) | 5,365.16 mi (8,634.39 km) |
| Llantwit Major to Casa Grande (Arizona) | 5,175.98 mi (8,329.94 km) |
| Llantwit Major to Casas Adobes (Arizona) | 5,179.89 mi (8,336.23 km) |
| Llantwit Major to Cascades (Virginia) | 3,537.55 mi (5,693.14 km) |
| Llantwit Major to Casper (Wyoming) | 4,459.75 mi (7,177.28 km) |
| Llantwit Major to Casselberry (Florida) | 4,190.61 mi (6,744.14 km) |
| Llantwit Major to Castaic (California) | 5,324.42 mi (8,568.82 km) |
| Llantwit Major to Castle Pines (Colorado) | 4,582.38 mi (7,374.63 km) |
