| Duluth to Butzbach | 4,236.41 mi (6,817.84 km) |
| Duluth to Buxtehude | 4,136.70 mi (6,657.38 km) |
| Duluth to Cadolzburg | 4,355.16 mi (7,008.96 km) |
| Duluth to Calbe | 4,273.20 mi (6,877.05 km) |
| Duluth to Calw | 4,315.70 mi (6,945.45 km) |
| Duluth to Castrop-Rauxel | 4,142.40 mi (6,666.55 km) |
| Duluth to Celle | 4,186.33 mi (6,737.25 km) |
| Duluth to Cham | 4,425.58 mi (7,122.29 km) |
| Duluth to Chemnitz | 4,359.08 mi (7,015.27 km) |
| Duluth to Clausthal-Zellerfeld | 4,231.01 mi (6,809.16 km) |
| Duluth to Cloppenburg | 4,110.62 mi (6,615.40 km) |
| Duluth to Coburg | 4,321.19 mi (6,954.29 km) |
| Duluth to Coesfeld | 4,120.16 mi (6,630.75 km) |
| Duluth to Cologne | 4,156.66 mi (6,689.49 km) |
| Duluth to Coswig | 4,366.60 mi (7,027.37 km) |
