| Llantwit Major to Cookeville (Tennessee) | 4,003.16 mi (6,442.46 km) |
| Llantwit Major to Coolidge (Arizona) | 5,165.94 mi (8,313.78 km) |
| Llantwit Major to Coon Rapids (Minnesota) | 3,886.23 mi (6,254.28 km) |
| Llantwit Major to Cooper City (Florida) | 4,276.64 mi (6,882.59 km) |
| Llantwit Major to Coos Bay (Oregon) | 4,991.68 mi (8,033.33 km) |
| Llantwit Major to Copiague (New York) | 3,302.07 mi (5,314.17 km) |
| Llantwit Major to Coppell (Texas) | 4,618.72 mi (7,433.10 km) |
| Llantwit Major to Copperas Cove (Texas) | 4,749.44 mi (7,643.49 km) |
| Llantwit Major to Coral Gables (Florida) | 4,293.20 mi (6,909.23 km) |
| Llantwit Major to Coral Springs (Florida) | 4,264.27 mi (6,862.68 km) |
| Llantwit Major to Coral Terrace (Florida) | 4,292.48 mi (6,908.08 km) |
| Llantwit Major to Coralville (Iowa) | 3,982.75 mi (6,409.62 km) |
| Llantwit Major to Coram (New York) | 3,277.18 mi (5,274.12 km) |
| Llantwit Major to Corcoran (California) | 5,264.40 mi (8,472.23 km) |
| Llantwit Major to Cordele (Georgia) | 4,132.34 mi (6,650.35 km) |
