| Duluth to Cibolo (Texas) | 1,233.17 mi (1,984.60 km) |
| Duluth to Cicero (Illinois) | 403.55 mi (649.45 km) |
| Duluth to Cimarron Hills (Colorado) | 837.44 mi (1,347.72 km) |
| Duluth to Cincinnati (Ohio) | 652.93 mi (1,050.79 km) |
| Duluth to Cinco Ranch (Texas) | 1,193.02 mi (1,919.98 km) |
| Duluth to Circleville (Ohio) | 677.63 mi (1,090.55 km) |
| Duluth to Citrus (California) | 1,600.44 mi (2,575.66 km) |
| Duluth to Citrus Heights (California) | 1,570.06 mi (2,526.76 km) |
| Duluth to Citrus Park (Florida) | 1,392.45 mi (2,240.94 km) |
| Duluth to Claiborne (Louisiana) | 983.73 mi (1,583.17 km) |
| Duluth to Claremont (California) | 1,592.48 mi (2,562.85 km) |
| Duluth to Claremont (New Hampshire) | 991.36 mi (1,595.44 km) |
| Duluth to Claremore (Oklahoma) | 744.52 mi (1,198.20 km) |
| Duluth to Clarksburg (Maryland) | 912.49 mi (1,468.50 km) |
| Duluth to Clarksburg (West Virginia) | 788.35 mi (1,268.73 km) |
