| Williamsport to Cockermouth | 3,364.82 mi (5,415.16 km) |
| Williamsport to Colchester | 3,592.86 mi (5,782.15 km) |
| Williamsport to Coleford | 3,454.10 mi (5,558.83 km) |
| Williamsport to Colne | 3,426.80 mi (5,514.91 km) |
| Williamsport to Colwyn Bay | 3,378.74 mi (5,437.55 km) |
| Williamsport to Congleton | 3,439.88 mi (5,535.95 km) |
| Williamsport to Conisbrough | 3,471.78 mi (5,587.29 km) |
| Williamsport to Connahs Quay | 3,405.59 mi (5,480.77 km) |
| Williamsport to Consett | 3,419.64 mi (5,503.38 km) |
| Williamsport to Conwy | 3,373.81 mi (5,429.62 km) |
| Williamsport to Cookstown | 3,234.47 mi (5,205.38 km) |
| Williamsport to Corby | 3,514.83 mi (5,656.57 km) |
| Williamsport to Corfe Mullen | 3,502.09 mi (5,636.07 km) |
| Williamsport to Corsham | 3,479.69 mi (5,600.03 km) |
| Williamsport to Coseley | 3,458.55 mi (5,565.99 km) |
