| Llantrisant to Caguas (Puerto Rico) | 4,070.87 mi (6,551.44 km) |
| Llantrisant to Cahokia (Illinois) | 4,075.42 mi (6,558.75 km) |
| Llantrisant to Calabasas (California) | 5,342.33 mi (8,597.65 km) |
| Llantrisant to Caldwell (Idaho) | 4,749.64 mi (7,643.81 km) |
| Llantrisant to Caledonia (Wisconsin) | 3,789.56 mi (6,098.71 km) |
| Llantrisant to Calera (Alabama) | 4,199.96 mi (6,759.18 km) |
| Llantrisant to Calexico (California) | 5,316.87 mi (8,556.67 km) |
| Llantrisant to Calhoun (Georgia) | 4,059.86 mi (6,533.71 km) |
| Llantrisant to California (Maryland) | 3,535.44 mi (5,689.74 km) |
| Llantrisant to California City (California) | 5,258.63 mi (8,462.95 km) |
| Llantrisant to Callaway (Florida) | 4,298.01 mi (6,916.98 km) |
| Llantrisant to Calumet City (Illinois) | 3,830.76 mi (6,165.01 km) |
| Llantrisant to Calverton (Maryland) | 3,520.40 mi (5,665.54 km) |
| Llantrisant to Camano (Washington) | 4,666.73 mi (7,510.38 km) |
| Llantrisant to Camarillo (California) | 5,349.44 mi (8,609.10 km) |
