| Swansea to Cockermouth | 3,983.56 mi (6,410.92 km) |
| Swansea to Colchester | 4,223.42 mi (6,796.93 km) |
| Swansea to Coleford | 4,091.03 mi (6,583.87 km) |
| Swansea to Colne | 4,049.45 mi (6,516.96 km) |
| Swansea to Colwyn Bay | 4,007.54 mi (6,449.52 km) |
| Swansea to Congleton | 4,067.31 mi (6,545.70 km) |
| Swansea to Conisbrough | 4,095.52 mi (6,591.10 km) |
| Swansea to Connahs Quay | 4,033.93 mi (6,491.98 km) |
| Swansea to Consett | 4,034.74 mi (6,493.28 km) |
| Swansea to Conwy | 4,002.87 mi (6,442.00 km) |
| Swansea to Cookstown | 3,857.97 mi (6,208.80 km) |
| Swansea to Corby | 4,144.28 mi (6,669.57 km) |
| Swansea to Corfe Mullen | 4,144.32 mi (6,669.64 km) |
| Swansea to Corsham | 4,118.17 mi (6,627.55 km) |
| Swansea to Coseley | 4,089.80 mi (6,581.90 km) |
