| Dubuque to Dormagen | 4,303.12 mi (6,925.20 km) |
| Dubuque to Dornstadt | 4,522.45 mi (7,278.19 km) |
| Dubuque to Dorsten | 4,286.59 mi (6,898.60 km) |
| Dubuque to Dortmund | 4,309.98 mi (6,936.25 km) |
| Dubuque to Dorverden | 4,318.87 mi (6,950.55 km) |
| Dubuque to Dossenheim | 4,435.83 mi (7,138.78 km) |
| Dubuque to Dreieich | 4,414.46 mi (7,104.39 km) |
| Dubuque to Drensteinfurt | 4,308.72 mi (6,934.21 km) |
| Dubuque to Dresden | 4,546.99 mi (7,317.67 km) |
| Dubuque to Drochtersen | 4,290.34 mi (6,904.64 km) |
| Dubuque to Drolshagen | 4,339.67 mi (6,984.03 km) |
| Dubuque to Duderstadt | 4,408.06 mi (7,094.08 km) |
| Dubuque to Duisburg | 4,288.16 mi (6,901.13 km) |
| Dubuque to Dulmen | 4,291.06 mi (6,905.79 km) |
| Dubuque to Duren | 4,302.81 mi (6,924.71 km) |
