| Duluth to Cognac | 4,116.45 mi (6,624.79 km) |
| Duluth to Cogolin | 4,484.53 mi (7,217.15 km) |
| Duluth to Colmar | 4,296.05 mi (6,913.83 km) |
| Duluth to Colombes | 4,077.40 mi (6,561.94 km) |
| Duluth to Colomiers | 4,269.86 mi (6,871.67 km) |
| Duluth to Combs-la-Ville | 4,099.16 mi (6,596.96 km) |
| Duluth to Comines | 4,027.98 mi (6,482.40 km) |
| Duluth to Compiegne | 4,077.39 mi (6,561.93 km) |
| Duluth to Concarneau | 3,890.57 mi (6,261.26 km) |
| Duluth to Conde-sur-l'Escaut | 4,061.35 mi (6,536.12 km) |
| Duluth to Conflans-Sainte-Honorine | 4,068.68 mi (6,547.90 km) |
| Duluth to Corbas | 4,314.72 mi (6,943.86 km) |
| Duluth to Corbeil-Essonnes | 4,098.69 mi (6,596.21 km) |
| Duluth to Cormeilles-en-Parisis | 4,073.46 mi (6,555.60 km) |
| Duluth to Cosne sur Loire | 4,165.90 mi (6,704.36 km) |
