| Lake Ronkonkoma to Nymburk | 4,063.67 mi (6,539.84 km) |
| Lake Ronkonkoma to Olomouc | 4,169.57 mi (6,710.28 km) |
| Lake Ronkonkoma to Opava | 4,183.21 mi (6,732.22 km) |
| Lake Ronkonkoma to Orlova | 4,206.70 mi (6,770.03 km) |
| Lake Ronkonkoma to Ostrava | 4,201.72 mi (6,762.01 km) |
| Lake Ronkonkoma to Ostrov | 3,977.27 mi (6,400.80 km) |
| Lake Ronkonkoma to Otrokovice | 4,193.64 mi (6,749.01 km) |
| Lake Ronkonkoma to Pardubice | 4,097.29 mi (6,593.95 km) |
| Lake Ronkonkoma to Pelhrimov | 4,095.39 mi (6,590.90 km) |
| Lake Ronkonkoma to Pisek | 4,056.68 mi (6,528.59 km) |
| Lake Ronkonkoma to Plzen | 4,012.06 mi (6,456.79 km) |
| Lake Ronkonkoma to Podebrady | 4,068.10 mi (6,546.97 km) |
| Lake Ronkonkoma to Policka | 4,127.02 mi (6,641.79 km) |
| Lake Ronkonkoma to Prachatice | 4,060.24 mi (6,534.33 km) |
| Lake Ronkonkoma to Prague | 4,042.52 mi (6,505.80 km) |
