| Ronkonkoma to Celbridge | 3,127.68 mi (5,033.52 km) |
| Ronkonkoma to Clondalkin | 3,133.76 mi (5,043.29 km) |
| Ronkonkoma to Clonmel | 3,094.20 mi (4,979.63 km) |
| Ronkonkoma to Cobh | 3,077.36 mi (4,952.53 km) |
| Ronkonkoma to Cork | 3,069.45 mi (4,939.81 km) |
| Ronkonkoma to Donegal | 3,047.82 mi (4,905.00 km) |
| Ronkonkoma to Douglas | 3,071.18 mi (4,942.59 km) |
| Ronkonkoma to Drogheda | 3,129.76 mi (5,036.87 km) |
| Ronkonkoma to Dublin | 3,138.74 mi (5,051.31 km) |
| Ronkonkoma to Dun Dealgan | 3,123.55 mi (5,026.87 km) |
| Ronkonkoma to Ennis | 3,035.18 mi (4,884.66 km) |
| Ronkonkoma to Enniscorthy | 3,139.08 mi (5,051.85 km) |
| Ronkonkoma to Finglas | 3,138.83 mi (5,051.46 km) |
| Ronkonkoma to Galway | 3,026.95 mi (4,871.40 km) |
| Ronkonkoma to Glanmire | 3,072.08 mi (4,944.04 km) |
