| Duluth to Brezovica | 4,637.43 mi (7,463.23 km) |
| Duluth to Cankova | 4,657.45 mi (7,495.43 km) |
| Duluth to Celje | 4,655.87 mi (7,492.90 km) |
| Duluth to Cerklje na Gorenjskem | 4,628.69 mi (7,449.16 km) |
| Duluth to Cerknica | 4,646.27 mi (7,477.45 km) |
| Duluth to Cerkno | 4,617.64 mi (7,431.37 km) |
| Duluth to Cerkvenjak | 4,662.45 mi (7,503.49 km) |
| Duluth to Cirkulane | 4,675.08 mi (7,523.81 km) |
| Duluth to Crensovci | 4,673.75 mi (7,521.67 km) |
| Duluth to Crna na Koroskem | 4,630.32 mi (7,451.78 km) |
| Duluth to Crnomelj | 4,685.68 mi (7,540.87 km) |
| Duluth to Destrnik | 4,663.96 mi (7,505.92 km) |
| Duluth to Divaca | 4,638.47 mi (7,464.90 km) |
| Duluth to Dobje | 4,665.00 mi (7,507.59 km) |
| Duluth to Dobrna | 4,649.59 mi (7,482.79 km) |
