| Port Huron to Caldicot | 3,593.27 mi (5,782.80 km) |
| Port Huron to Calne | 3,626.78 mi (5,836.74 km) |
| Port Huron to Cam | 3,605.23 mi (5,802.05 km) |
| Port Huron to Camberley | 3,679.15 mi (5,921.02 km) |
| Port Huron to Camborne | 3,529.98 mi (5,680.95 km) |
| Port Huron to Cambridge | 3,686.69 mi (5,933.15 km) |
| Port Huron to Cambuslang | 3,429.99 mi (5,520.03 km) |
| Port Huron to Canford Cliffs | 3,651.17 mi (5,875.98 km) |
| Port Huron to Cannock | 3,590.54 mi (5,778.41 km) |
| Port Huron to Canterbury | 3,751.59 mi (6,037.59 km) |
| Port Huron to Carlisle | 3,497.60 mi (5,628.85 km) |
| Port Huron to Carlton Colville | 3,739.05 mi (6,017.42 km) |
| Port Huron to Carluke | 3,444.16 mi (5,542.84 km) |
| Port Huron to Carnoustie | 3,466.37 mi (5,578.58 km) |
| Port Huron to Carshalton | 3,700.61 mi (5,955.56 km) |
