| Duluth to Caldicot | 3,790.74 mi (6,100.61 km) |
| Duluth to Calne | 3,823.28 mi (6,152.97 km) |
| Duluth to Cam | 3,800.39 mi (6,116.13 km) |
| Duluth to Camberley | 3,872.41 mi (6,232.04 km) |
| Duluth to Camborne | 3,749.04 mi (6,033.49 km) |
| Duluth to Cambridge | 3,868.86 mi (6,226.33 km) |
| Duluth to Cambuslang | 3,589.02 mi (5,775.96 km) |
| Duluth to Canford Cliffs | 3,854.39 mi (6,203.05 km) |
| Duluth to Cannock | 3,775.02 mi (6,075.31 km) |
| Duluth to Canterbury | 3,939.14 mi (6,339.43 km) |
| Duluth to Carlisle | 3,662.85 mi (5,894.78 km) |
| Duluth to Carlton Colville | 3,913.61 mi (6,298.35 km) |
| Duluth to Carluke | 3,603.17 mi (5,798.74 km) |
| Duluth to Carnoustie | 3,614.19 mi (5,816.47 km) |
| Duluth to Carshalton | 3,891.65 mi (6,263.00 km) |
