| Duluth to Castrovillari | 5,007.70 mi (8,059.12 km) |
| Duluth to Catania | 5,083.98 mi (8,181.87 km) |
| Duluth to Catanzaro | 5,068.70 mi (8,157.28 km) |
| Duluth to Cattolica | 4,678.04 mi (7,528.57 km) |
| Duluth to Cava de' Tirreni | 4,909.01 mi (7,900.29 km) |
| Duluth to Cavallino | 5,053.79 mi (8,133.29 km) |
| Duluth to Cavarzere | 4,598.79 mi (7,401.04 km) |
| Duluth to Cave | 4,789.68 mi (7,708.25 km) |
| Duluth to Cavriago | 4,564.41 mi (7,345.71 km) |
| Duluth to Cavriglia | 4,654.85 mi (7,491.26 km) |
| Duluth to Cazzago San Martino | 4,504.90 mi (7,249.93 km) |
| Duluth to Ceccano | 4,816.48 mi (7,751.38 km) |
| Duluth to Cecina | 4,629.29 mi (7,450.12 km) |
| Duluth to Cefalu | 5,016.95 mi (8,074.00 km) |
| Duluth to Ceglie Messapico | 5,011.99 mi (8,066.02 km) |
