| Williamsport to Caldicot | 3,453.21 mi (5,557.41 km) |
| Williamsport to Calne | 3,486.91 mi (5,611.63 km) |
| Williamsport to Cam | 3,466.32 mi (5,578.50 km) |
| Williamsport to Camberley | 3,540.50 mi (5,697.89 km) |
| Williamsport to Camborne | 3,378.76 mi (5,437.58 km) |
| Williamsport to Cambridge | 3,554.05 mi (5,719.68 km) |
| Williamsport to Cambuslang | 3,313.04 mi (5,331.82 km) |
| Williamsport to Canford Cliffs | 3,507.35 mi (5,644.54 km) |
| Williamsport to Cannock | 3,457.65 mi (5,564.56 km) |
| Williamsport to Canterbury | 3,615.32 mi (5,818.29 km) |
| Williamsport to Carlisle | 3,376.39 mi (5,433.78 km) |
| Williamsport to Carlton Colville | 3,610.02 mi (5,809.77 km) |
| Williamsport to Carluke | 3,327.05 mi (5,354.37 km) |
| Williamsport to Carnoustie | 3,355.19 mi (5,399.66 km) |
| Williamsport to Carshalton | 3,562.97 mi (5,734.04 km) |
