| Killarney to Decatur (Georgia) | 3,805.39 mi (6,124.18 km) |
| Killarney to Decatur (Illinois) | 3,710.31 mi (5,971.17 km) |
| Killarney to Deer Park (New York) | 3,033.91 mi (4,882.60 km) |
| Killarney to Deer Park (Texas) | 4,452.08 mi (7,164.93 km) |
| Killarney to Deerfield (Illinois) | 3,563.61 mi (5,735.07 km) |
| Killarney to Deerfield Beach (Florida) | 3,995.91 mi (6,430.79 km) |
| Killarney to Defiance (Ohio) | 3,463.89 mi (5,574.59 km) |
| Killarney to DeForest (Wisconsin) | 3,574.94 mi (5,753.31 km) |
| Killarney to DeKalb (Illinois) | 3,609.24 mi (5,808.52 km) |
| Killarney to Del Aire (California) | 5,115.13 mi (8,232.00 km) |
| Killarney to Del City (Oklahoma) | 4,256.94 mi (6,850.88 km) |
| Killarney to Del Rio (Texas) | 4,701.11 mi (7,565.70 km) |
| Killarney to DeLand (Florida) | 3,909.58 mi (6,291.86 km) |
| Killarney to Delano (California) | 5,044.08 mi (8,117.66 km) |
| Killarney to Delaware (Ohio) | 3,455.55 mi (5,561.17 km) |
