| Llantwit Major to Caguas (Puerto Rico) | 4,065.02 mi (6,542.02 km) |
| Llantwit Major to Cahokia (Illinois) | 4,075.37 mi (6,558.68 km) |
| Llantwit Major to Calabasas (California) | 5,345.05 mi (8,602.02 km) |
| Llantwit Major to Caldwell (Idaho) | 4,753.15 mi (7,649.45 km) |
| Llantwit Major to Caledonia (Wisconsin) | 3,789.94 mi (6,099.31 km) |
| Llantwit Major to Calera (Alabama) | 4,198.69 mi (6,757.15 km) |
| Llantwit Major to Calexico (California) | 5,319.04 mi (8,560.18 km) |
| Llantwit Major to Calhoun (Georgia) | 4,058.58 mi (6,531.66 km) |
| Llantwit Major to California (Maryland) | 3,533.79 mi (5,687.08 km) |
| Llantwit Major to California City (California) | 5,261.36 mi (8,467.34 km) |
| Llantwit Major to Callaway (Florida) | 4,296.18 mi (6,914.03 km) |
| Llantwit Major to Calumet City (Illinois) | 3,830.90 mi (6,165.24 km) |
| Llantwit Major to Calverton (Maryland) | 3,518.94 mi (5,663.18 km) |
| Llantwit Major to Camano (Washington) | 4,671.30 mi (7,517.73 km) |
| Llantwit Major to Camarillo (California) | 5,352.21 mi (8,613.55 km) |
