| Duluth to Casamassima | 4,976.06 mi (8,008.20 km) |
| Duluth to Casandrino | 4,881.07 mi (7,855.32 km) |
| Duluth to Casapulla | 4,875.67 mi (7,846.63 km) |
| Duluth to Casarano | 5,067.98 mi (8,156.13 km) |
| Duluth to Casatenovo | 4,473.96 mi (7,200.14 km) |
| Duluth to Casciana Terme | 4,622.98 mi (7,439.97 km) |
| Duluth to Cascina | 4,613.10 mi (7,424.06 km) |
| Duluth to Caselle Torinese | 4,437.71 mi (7,141.81 km) |
| Duluth to Caserta | 4,877.48 mi (7,849.55 km) |
| Duluth to Casier | 4,582.01 mi (7,374.03 km) |
| Duluth to Casorate Primo | 4,481.02 mi (7,211.51 km) |
| Duluth to Casoria | 4,884.54 mi (7,860.91 km) |
| Duluth to Cassano al Ionio | 5,013.61 mi (8,068.63 km) |
| Duluth to Cassano d'Adda | 4,488.95 mi (7,224.27 km) |
| Duluth to Cassano delle Murge | 4,974.11 mi (8,005.05 km) |
