| Irthlingborough to Dover (New Jersey) | 3,438.80 mi (5,534.22 km) |
| Irthlingborough to Dover (Ohio) | 3,729.58 mi (6,002.18 km) |
| Irthlingborough to Downers Grove (Illinois) | 3,921.77 mi (6,311.48 km) |
| Irthlingborough to Downey (California) | 5,390.53 mi (8,675.21 km) |
| Irthlingborough to Dranesville (Virginia) | 3,636.79 mi (5,852.85 km) |
| Irthlingborough to Draper (Utah) | 4,821.65 mi (7,759.70 km) |
| Irthlingborough to Drexel Heights (Arizona) | 5,257.11 mi (8,460.50 km) |
| Irthlingborough to Drexel Hill (Pennsylvania) | 3,510.41 mi (5,649.46 km) |
| Irthlingborough to Duarte (California) | 5,371.96 mi (8,645.34 km) |
| Irthlingborough to Dublin (California) | 5,286.91 mi (8,508.45 km) |
| Irthlingborough to Dublin (Georgia) | 4,170.26 mi (6,711.38 km) |
| Irthlingborough to Dublin (Ohio) | 3,814.07 mi (6,138.16 km) |
| Irthlingborough to Dubuque (Iowa) | 3,988.40 mi (6,418.70 km) |
| Irthlingborough to Duluth (Georgia) | 4,146.98 mi (6,673.92 km) |
| Irthlingborough to Duluth (Minnesota) | 3,838.59 mi (6,177.62 km) |
