| Duluth to Corato | 4,947.59 mi (7,962.38 km) |
| Duluth to Corbetta | 4,470.48 mi (7,194.55 km) |
| Duluth to Corciano | 4,702.16 mi (7,567.40 km) |
| Duluth to Cordenons | 4,580.05 mi (7,370.88 km) |
| Duluth to Cori | 4,797.35 mi (7,720.59 km) |
| Duluth to Coriano | 4,673.29 mi (7,520.93 km) |
| Duluth to Corigliano Calabro | 5,030.13 mi (8,095.21 km) |
| Duluth to Corleone | 5,000.78 mi (8,047.97 km) |
| Duluth to Cormano | 4,475.62 mi (7,202.82 km) |
| Duluth to Cornaredo | 4,473.14 mi (7,198.82 km) |
| Duluth to Cornate d'Adda | 4,481.74 mi (7,212.67 km) |
| Duluth to Cornedo Vicentino | 4,550.22 mi (7,322.87 km) |
| Duluth to Correggio | 4,570.02 mi (7,354.74 km) |
| Duluth to Corridonia | 4,740.71 mi (7,629.44 km) |
| Duluth to Corsico | 4,479.23 mi (7,208.62 km) |
