| Ronkonkoma to Cesky Tesin | 4,219.36 mi (6,790.41 km) |
| Ronkonkoma to Cheb | 3,963.37 mi (6,378.43 km) |
| Ronkonkoma to Chocen | 4,117.48 mi (6,626.45 km) |
| Ronkonkoma to Chodov | 3,973.19 mi (6,394.23 km) |
| Ronkonkoma to Chomutov | 3,992.91 mi (6,425.97 km) |
| Ronkonkoma to Chotebor | 4,105.13 mi (6,606.57 km) |
| Ronkonkoma to Chrudim | 4,102.46 mi (6,602.28 km) |
| Ronkonkoma to Decin | 4,013.62 mi (6,459.30 km) |
| Ronkonkoma to Dobris | 4,043.94 mi (6,508.09 km) |
| Ronkonkoma to Domazlice | 4,005.39 mi (6,446.05 km) |
| Ronkonkoma to Duchcov | 4,001.39 mi (6,439.61 km) |
| Ronkonkoma to Dvur Kralove nad Labem | 4,087.32 mi (6,577.91 km) |
| Ronkonkoma to Frenstat pod Radhostem | 4,210.14 mi (6,775.57 km) |
| Ronkonkoma to Frydek-Mistek | 4,210.81 mi (6,776.65 km) |
| Ronkonkoma to Frydlant nad Ostravici | 4,214.38 mi (6,782.38 km) |
