| Ronkonkoma to Castrovillari | 4,479.38 mi (7,208.86 km) |
| Ronkonkoma to Catania | 4,517.69 mi (7,270.51 km) |
| Ronkonkoma to Catanzaro | 4,532.17 mi (7,293.81 km) |
| Ronkonkoma to Cattolica | 4,177.45 mi (6,722.95 km) |
| Ronkonkoma to Cava de' Tirreni | 4,379.85 mi (7,048.68 km) |
| Ronkonkoma to Cavallino | 4,548.35 mi (7,319.86 km) |
| Ronkonkoma to Cavarzere | 4,109.85 mi (6,614.17 km) |
| Ronkonkoma to Cave | 4,261.27 mi (6,857.86 km) |
| Ronkonkoma to Cavriago | 4,057.80 mi (6,530.40 km) |
| Ronkonkoma to Cavriglia | 4,138.56 mi (6,660.36 km) |
| Ronkonkoma to Cazzago San Martino | 4,007.39 mi (6,449.27 km) |
| Ronkonkoma to Ceccano | 4,287.87 mi (6,900.65 km) |
| Ronkonkoma to Cecina | 4,102.97 mi (6,603.10 km) |
| Ronkonkoma to Cefalu | 4,448.45 mi (7,159.08 km) |
| Ronkonkoma to Ceglie Messapico | 4,504.96 mi (7,250.04 km) |
