| Ronkonkoma to Dallas (Oregon) | 2,516.89 mi (4,050.55 km) |
| Ronkonkoma to Dallas (Texas) | 1,414.56 mi (2,276.51 km) |
| Ronkonkoma to Dalton (Georgia) | 768.58 mi (1,236.91 km) |
| Ronkonkoma to Daly City (California) | 2,614.22 mi (4,207.19 km) |
| Ronkonkoma to Damascus (Maryland) | 239.98 mi (386.21 km) |
| Ronkonkoma to Damascus (Oregon) | 2,468.65 mi (3,972.91 km) |
| Ronkonkoma to Dana Point (California) | 2,479.29 mi (3,990.02 km) |
| Ronkonkoma to Danbury (Connecticut) | 45.07 mi (72.53 km) |
| Ronkonkoma to Dania Beach (Florida) | 1,095.63 mi (1,763.24 km) |
| Ronkonkoma to Danville (California) | 2,585.66 mi (4,161.21 km) |
| Ronkonkoma to Danville (Illinois) | 761.91 mi (1,226.18 km) |
| Ronkonkoma to Danville (Indiana) | 708.11 mi (1,139.59 km) |
| Ronkonkoma to Danville (Kentucky) | 660.27 mi (1,062.60 km) |
| Ronkonkoma to Danville (Virginia) | 446.87 mi (719.16 km) |
| Ronkonkoma to Daphne (Alabama) | 1,083.47 mi (1,743.68 km) |
