| Dubuque to Dillenburg | 4,370.02 mi (7,032.87 km) |
| Dubuque to Dillingen | 4,537.47 mi (7,302.36 km) |
| Dubuque to Dillingen | 4,368.90 mi (7,031.07 km) |
| Dubuque to Dingolfing | 4,607.82 mi (7,415.57 km) |
| Dubuque to Dinkelsbuhl | 4,511.03 mi (7,259.80 km) |
| Dubuque to Dinklage | 4,288.30 mi (6,901.35 km) |
| Dubuque to Dinslaken | 4,282.01 mi (6,891.22 km) |
| Dubuque to Dippoldiswalde | 4,551.23 mi (7,324.50 km) |
| Dubuque to Ditzingen | 4,475.69 mi (7,202.93 km) |
| Dubuque to Dobeln | 4,522.65 mi (7,278.50 km) |
| Dubuque to Doberlug-Kirchhain | 4,516.83 mi (7,269.14 km) |
| Dubuque to Donaueschingen | 4,490.89 mi (7,227.38 km) |
| Dubuque to Donauworth | 4,543.93 mi (7,312.75 km) |
| Dubuque to Donzdorf | 4,508.97 mi (7,256.48 km) |
| Dubuque to Dorfen | 4,611.07 mi (7,420.80 km) |
