| Guadarrama to Colchester | 810.48 mi (1,304.34 km) |
| Guadarrama to Coleford | 771.37 mi (1,241.40 km) |
| Guadarrama to Colne | 915.15 mi (1,472.79 km) |
| Guadarrama to Colwyn Bay | 871.95 mi (1,403.27 km) |
| Guadarrama to Congleton | 867.35 mi (1,395.87 km) |
| Guadarrama to Conisbrough | 894.82 mi (1,440.08 km) |
| Guadarrama to Connahs Quay | 868.13 mi (1,397.12 km) |
| Guadarrama to Consett | 985.02 mi (1,585.23 km) |
| Guadarrama to Conwy | 871.16 mi (1,401.99 km) |
| Guadarrama to Cookstown | 973.22 mi (1,566.25 km) |
| Guadarrama to Corby | 831.79 mi (1,338.64 km) |
| Guadarrama to Corfe Mullen | 704.70 mi (1,134.10 km) |
| Guadarrama to Corsham | 749.04 mi (1,205.46 km) |
| Guadarrama to Coseley | 826.05 mi (1,329.40 km) |
| Guadarrama to Cosham | 717.44 mi (1,154.61 km) |
