| Llantrisant to Cloverly (Maryland) | 3,520.34 mi (5,665.44 km) |
| Llantrisant to Clovis (California) | 5,223.24 mi (8,405.99 km) |
| Llantrisant to Clovis (New Mexico) | 4,780.15 mi (7,692.90 km) |
| Llantrisant to Clute (Texas) | 4,757.33 mi (7,656.18 km) |
| Llantrisant to Coachella (California) | 5,282.95 mi (8,502.09 km) |
| Llantrisant to Coalinga (California) | 5,282.48 mi (8,501.33 km) |
| Llantrisant to Coamo (Puerto Rico) | 4,092.84 mi (6,586.79 km) |
| Llantrisant to Coatesville (Pennsylvania) | 3,433.26 mi (5,525.30 km) |
| Llantrisant to Cockeysville (Maryland) | 3,488.62 mi (5,614.39 km) |
| Llantrisant to Cocoa (Florida) | 4,183.61 mi (6,732.87 km) |
| Llantrisant to Cocoa Beach (Florida) | 4,180.11 mi (6,727.24 km) |
| Llantrisant to Coconut Creek (Florida) | 4,263.61 mi (6,861.61 km) |
| Llantrisant to Coeur d'Alene (Idaho) | 4,533.55 mi (7,296.04 km) |
| Llantrisant to Cohoes (New York) | 3,228.78 mi (5,196.22 km) |
| Llantrisant to Cold Springs (Nevada) | 5,070.92 mi (8,160.86 km) |
