| Duluth to Cernavoda | 5,164.56 mi (8,311.55 km) |
| Duluth to Chitila | 5,092.42 mi (8,195.46 km) |
| Duluth to Cisnadie | 4,971.38 mi (8,000.67 km) |
| Duluth to Cluj-Napoca | 4,898.40 mi (7,883.21 km) |
| Duluth to Codlea | 5,012.23 mi (8,066.40 km) |
| Duluth to Comanesti | 5,003.62 mi (8,052.54 km) |
| Duluth to Comarnic | 5,041.91 mi (8,114.17 km) |
| Duluth to Constanta | 5,192.07 mi (8,355.83 km) |
| Duluth to Corabia | 5,085.23 mi (8,183.88 km) |
| Duluth to Costesti | 5,049.44 mi (8,126.29 km) |
| Duluth to Covasna | 5,026.73 mi (8,089.75 km) |
| Duluth to Craiova | 5,033.69 mi (8,100.94 km) |
| Duluth to Cristuru Secuiesc | 4,968.08 mi (7,995.35 km) |
| Duluth to Cugir | 4,939.90 mi (7,949.99 km) |
| Duluth to Cumpana | 5,192.68 mi (8,356.82 km) |
