| Duluth to Candler-McAfee (Georgia) | 991.21 mi (1,595.21 km) |
| Duluth to Caño Martin Peña (Puerto Rico) | 2,454.21 mi (3,949.68 km) |
| Duluth to Cañon City (Colorado) | 877.67 mi (1,412.47 km) |
| Duluth to Canóvanas (Puerto Rico) | 2,462.95 mi (3,963.73 km) |
| Duluth to Canton (Georgia) | 953.25 mi (1,534.11 km) |
| Duluth to Canton (Illinois) | 441.81 mi (711.03 km) |
| Duluth to Canton (Mississippi) | 985.90 mi (1,586.65 km) |
| Duluth to Canton (Ohio) | 676.21 mi (1,088.26 km) |
| Duluth to Canyon (Texas) | 959.52 mi (1,544.21 km) |
| Duluth to Canyon Lake (California) | 1,593.05 mi (2,563.76 km) |
| Duluth to Canyon Lake (Texas) | 1,212.91 mi (1,951.99 km) |
| Duluth to Cape Coral (Florida) | 1,497.12 mi (2,409.38 km) |
| Duluth to Cape Girardeau (Missouri) | 667.10 mi (1,073.60 km) |
| Duluth to Carbondale (Illinois) | 642.94 mi (1,034.71 km) |
| Duluth to Carlisle (Pennsylvania) | 873.62 mi (1,405.95 km) |
