| Willoughby to Cockermouth | 3,512.10 mi (5,652.18 km) |
| Willoughby to Colchester | 3,746.71 mi (6,029.74 km) |
| Willoughby to Coleford | 3,611.24 mi (5,811.72 km) |
| Willoughby to Colne | 3,576.22 mi (5,755.37 km) |
| Willoughby to Colwyn Bay | 3,531.37 mi (5,683.19 km) |
| Willoughby to Congleton | 3,591.86 mi (5,780.53 km) |
| Willoughby to Conisbrough | 3,621.84 mi (5,828.79 km) |
| Willoughby to Connahs Quay | 3,558.01 mi (5,726.06 km) |
| Willoughby to Consett | 3,565.11 mi (5,737.49 km) |
| Willoughby to Conwy | 3,526.57 mi (5,675.47 km) |
| Willoughby to Cookstown | 3,384.06 mi (5,446.12 km) |
| Willoughby to Corby | 3,667.98 mi (5,903.05 km) |
| Willoughby to Corfe Mullen | 3,662.22 mi (5,893.78 km) |
| Willoughby to Corsham | 3,637.71 mi (5,854.34 km) |
| Willoughby to Coseley | 3,612.60 mi (5,813.92 km) |
