| Duluth to Cockermouth | 3,656.72 mi (5,884.92 km) |
| Duluth to Colchester | 3,908.58 mi (6,290.25 km) |
| Duluth to Coleford | 3,787.97 mi (6,096.14 km) |
| Duluth to Colne | 3,726.63 mi (5,997.44 km) |
| Duluth to Colwyn Bay | 3,694.09 mi (5,945.07 km) |
| Duluth to Congleton | 3,750.79 mi (6,036.31 km) |
| Duluth to Conisbrough | 3,773.36 mi (6,072.63 km) |
| Duluth to Connahs Quay | 3,719.31 mi (5,985.65 km) |
| Duluth to Consett | 3,702.15 mi (5,958.04 km) |
| Duluth to Conwy | 3,689.88 mi (5,938.29 km) |
| Duluth to Cookstown | 3,539.98 mi (5,697.05 km) |
| Duluth to Corby | 3,829.24 mi (6,162.57 km) |
| Duluth to Corfe Mullen | 3,848.51 mi (6,193.58 km) |
| Duluth to Corsham | 3,816.97 mi (6,142.83 km) |
| Duluth to Coseley | 3,778.34 mi (6,080.66 km) |
