| Rockford to Dormagen | 4,255.61 mi (6,848.74 km) |
| Rockford to Dornstadt | 4,473.59 mi (7,199.55 km) |
| Rockford to Dorsten | 4,239.81 mi (6,823.32 km) |
| Rockford to Dortmund | 4,263.29 mi (6,861.10 km) |
| Rockford to Dorverden | 4,274.62 mi (6,879.34 km) |
| Rockford to Dossenheim | 4,387.38 mi (7,060.80 km) |
| Rockford to Dreieich | 4,366.64 mi (7,027.43 km) |
| Rockford to Drensteinfurt | 4,262.48 mi (6,859.80 km) |
| Rockford to Dresden | 4,503.00 mi (7,246.88 km) |
| Rockford to Drochtersen | 4,247.18 mi (6,835.18 km) |
| Rockford to Drolshagen | 4,292.56 mi (6,908.21 km) |
| Rockford to Duderstadt | 4,362.76 mi (7,021.18 km) |
| Rockford to Duisburg | 4,241.02 mi (6,825.27 km) |
| Rockford to Dulmen | 4,244.64 mi (6,831.08 km) |
| Rockford to Duren | 4,254.79 mi (6,847.43 km) |
