| Duluth to Cullman (Alabama) | 913.35 mi (1,469.89 km) |
| Duluth to Culpeper (Virginia) | 917.39 mi (1,476.40 km) |
| Duluth to Culver City (California) | 1,627.42 mi (2,619.08 km) |
| Duluth to Cumberland (Maryland) | 832.58 mi (1,339.91 km) |
| Duluth to Cupertino (California) | 1,655.05 mi (2,663.55 km) |
| Duluth to Cutler Bay (Florida) | 1,601.64 mi (2,577.60 km) |
| Duluth to Cutlerville (Michigan) | 417.35 mi (671.67 km) |
| Duluth to Cuyahoga Falls (Ohio) | 654.15 mi (1,052.75 km) |
| Duluth to Cypress (California) | 1,620.46 mi (2,607.89 km) |
| Duluth to Cypress Gardens (Florida) | 1,415.30 mi (2,277.71 km) |
| Duluth to Cypress Lake (Florida) | 1,505.92 mi (2,423.54 km) |
| Duluth to D'Iberville (Mississippi) | 1,139.76 mi (1,834.27 km) |
| Duluth to Dakota Ridge (Colorado) | 818.55 mi (1,317.34 km) |
| Duluth to Dale City (Virginia) | 935.23 mi (1,505.10 km) |
| Duluth to Dallas (Georgia) | 967.05 mi (1,556.31 km) |
