| Swansea to Cloverleaf (Texas) | 673.82 mi (1,084.40 km) |
| Swansea to Cloverly (Maryland) | 699.45 mi (1,125.66 km) |
| Swansea to Clovis (California) | 1,621.03 mi (2,608.80 km) |
| Swansea to Clovis (New Mexico) | 785.76 mi (1,264.56 km) |
| Swansea to Clute (Texas) | 727.43 mi (1,170.68 km) |
| Swansea to Coachella (California) | 1,492.55 mi (2,402.03 km) |
| Swansea to Coalinga (California) | 1,667.13 mi (2,682.99 km) |
| Swansea to Coamo (Puerto Rico) | 2,004.40 mi (3,225.77 km) |
| Swansea to Coatesville (Pennsylvania) | 763.38 mi (1,228.54 km) |
| Swansea to Cockeysville (Maryland) | 719.23 mi (1,157.48 km) |
| Swansea to Cocoa (Florida) | 879.79 mi (1,415.89 km) |
| Swansea to Cocoa Beach (Florida) | 887.45 mi (1,428.21 km) |
| Swansea to Coconut Creek (Florida) | 1,021.08 mi (1,643.28 km) |
| Swansea to Coeur d'Alene (Idaho) | 1,482.42 mi (2,385.73 km) |
| Swansea to Cohoes (New York) | 899.92 mi (1,448.29 km) |
