| Lake Ronkonkoma to Cesky Tesin | 4,217.70 mi (6,787.72 km) |
| Lake Ronkonkoma to Cheb | 3,961.73 mi (6,375.79 km) |
| Lake Ronkonkoma to Chocen | 4,115.82 mi (6,623.78 km) |
| Lake Ronkonkoma to Chodov | 3,971.55 mi (6,391.59 km) |
| Lake Ronkonkoma to Chomutov | 3,991.26 mi (6,423.31 km) |
| Lake Ronkonkoma to Chotebor | 4,103.48 mi (6,603.92 km) |
| Lake Ronkonkoma to Chrudim | 4,100.81 mi (6,599.61 km) |
| Lake Ronkonkoma to Decin | 4,011.96 mi (6,456.63 km) |
| Lake Ronkonkoma to Dobris | 4,042.29 mi (6,505.44 km) |
| Lake Ronkonkoma to Domazlice | 4,003.76 mi (6,443.43 km) |
| Lake Ronkonkoma to Duchcov | 3,999.73 mi (6,436.95 km) |
| Lake Ronkonkoma to Dvur Kralove nad Labem | 4,085.66 mi (6,575.23 km) |
| Lake Ronkonkoma to Frenstat pod Radhostem | 4,208.48 mi (6,772.90 km) |
| Lake Ronkonkoma to Frydek-Mistek | 4,209.15 mi (6,773.97 km) |
| Lake Ronkonkoma to Frydlant nad Ostravici | 4,212.71 mi (6,779.71 km) |
