| Tefenni to Colchester | 1,722.87 mi (2,772.68 km) |
| Tefenni to Coleford | 1,859.50 mi (2,992.58 km) |
| Tefenni to Colne | 1,895.59 mi (3,050.65 km) |
| Tefenni to Colwyn Bay | 1,938.35 mi (3,119.48 km) |
| Tefenni to Congleton | 1,878.15 mi (3,022.58 km) |
| Tefenni to Conisbrough | 1,849.50 mi (2,976.47 km) |
| Tefenni to Connahs Quay | 1,911.80 mi (3,076.74 km) |
| Tefenni to Consett | 1,912.13 mi (3,077.27 km) |
| Tefenni to Conwy | 1,943.12 mi (3,127.14 km) |
| Tefenni to Cookstown | 2,087.08 mi (3,358.83 km) |
| Tefenni to Corby | 1,801.67 mi (2,899.51 km) |
| Tefenni to Corfe Mullen | 1,811.94 mi (2,916.04 km) |
| Tefenni to Corsham | 1,833.78 mi (2,951.19 km) |
| Tefenni to Coseley | 1,856.96 mi (2,988.49 km) |
| Tefenni to Cosham | 1,774.34 mi (2,855.52 km) |
