| Dubuque to Coswig | 4,467.23 mi (7,189.32 km) |
| Dubuque to Cottbus | 4,536.42 mi (7,300.67 km) |
| Dubuque to Crailsheim | 4,499.39 mi (7,241.06 km) |
| Dubuque to Cremlingen | 4,391.59 mi (7,067.58 km) |
| Dubuque to Crimmitschau | 4,510.55 mi (7,259.03 km) |
| Dubuque to Cuxhaven | 4,260.86 mi (6,857.19 km) |
| Dubuque to Dachau | 4,585.51 mi (7,379.67 km) |
| Dubuque to Dallgow-Doberitz | 4,460.65 mi (7,178.72 km) |
| Dubuque to Damme | 4,296.27 mi (6,914.18 km) |
| Dubuque to Darmstadt | 4,417.94 mi (7,109.99 km) |
| Dubuque to Dassel | 4,376.50 mi (7,043.30 km) |
| Dubuque to Datteln | 4,300.19 mi (6,920.49 km) |
| Dubuque to Dautphe | 4,374.51 mi (7,040.09 km) |
| Dubuque to Deggendorf | 4,615.78 mi (7,428.39 km) |
| Dubuque to Delbruck | 4,338.84 mi (6,982.69 km) |
