| Llantwit Major to Cloverly (Maryland) | 3,518.89 mi (5,663.11 km) |
| Llantwit Major to Clovis (California) | 5,226.35 mi (8,410.99 km) |
| Llantwit Major to Clovis (New Mexico) | 4,781.04 mi (7,694.34 km) |
| Llantwit Major to Clute (Texas) | 4,756.58 mi (7,654.97 km) |
| Llantwit Major to Coachella (California) | 5,285.32 mi (8,505.90 km) |
| Llantwit Major to Coalinga (California) | 5,285.60 mi (8,506.34 km) |
| Llantwit Major to Coamo (Puerto Rico) | 4,087.02 mi (6,577.42 km) |
| Llantwit Major to Coatesville (Pennsylvania) | 3,431.83 mi (5,523.00 km) |
| Llantwit Major to Cockeysville (Maryland) | 3,487.19 mi (5,612.09 km) |
| Llantwit Major to Cocoa (Florida) | 4,180.93 mi (6,728.56 km) |
| Llantwit Major to Cocoa Beach (Florida) | 4,177.41 mi (6,722.89 km) |
| Llantwit Major to Coconut Creek (Florida) | 4,260.57 mi (6,856.72 km) |
| Llantwit Major to Coeur d'Alene (Idaho) | 4,537.53 mi (7,302.44 km) |
| Llantwit Major to Cohoes (New York) | 3,227.65 mi (5,194.40 km) |
| Llantwit Major to Cold Springs (Nevada) | 5,074.36 mi (8,166.39 km) |
