| Ronkonkoma to Groveton (Virginia) | 253.81 mi (408.46 km) |
| Ronkonkoma to Grovetown (Georgia) | 712.29 mi (1,146.32 km) |
| Ronkonkoma to Guayama (Puerto Rico) | 1,631.46 mi (2,625.59 km) |
| Ronkonkoma to Guaynabo (Puerto Rico) | 1,603.94 mi (2,581.29 km) |
| Ronkonkoma to Gulf Shores (Alabama) | 1,093.02 mi (1,759.05 km) |
| Ronkonkoma to Gulfport (Florida) | 1,053.61 mi (1,695.62 km) |
| Ronkonkoma to Gulfport (Mississippi) | 1,144.05 mi (1,841.17 km) |
| Ronkonkoma to Gunbarrel (Colorado) | 1,676.72 mi (2,698.42 km) |
| Ronkonkoma to Gurnee (Illinois) | 772.20 mi (1,242.73 km) |
| Ronkonkoma to Guthrie (Oklahoma) | 1,356.83 mi (2,183.61 km) |
| Ronkonkoma to Guttenberg (New Jersey) | 46.05 mi (74.11 km) |
| Ronkonkoma to Guymon (Oklahoma) | 1,547.02 mi (2,489.69 km) |
| Ronkonkoma to Hacienda Heights (California) | 2,478.59 mi (3,988.90 km) |
| Ronkonkoma to Hackensack (New Jersey) | 48.53 mi (78.10 km) |
| Ronkonkoma to Hackettstown (New Jersey) | 89.00 mi (143.23 km) |
