| Ronkonkoma to Collegno | 3,917.20 mi (6,304.12 km) |
| Ronkonkoma to Cologno al Serio | 3,993.37 mi (6,426.70 km) |
| Ronkonkoma to Cologno Monzese | 3,976.98 mi (6,400.33 km) |
| Ronkonkoma to Colorno | 4,043.70 mi (6,507.71 km) |
| Ronkonkoma to Comacchio | 4,128.85 mi (6,644.74 km) |
| Ronkonkoma to Comiso | 4,516.31 mi (7,268.30 km) |
| Ronkonkoma to Como | 3,959.85 mi (6,372.76 km) |
| Ronkonkoma to Concordia Sagittaria | 4,121.41 mi (6,632.77 km) |
| Ronkonkoma to Concorezzo | 3,977.52 mi (6,401.20 km) |
| Ronkonkoma to Conegliano | 4,094.10 mi (6,588.81 km) |
| Ronkonkoma to Conselice | 4,119.97 mi (6,630.46 km) |
| Ronkonkoma to Conselve | 4,097.47 mi (6,594.25 km) |
| Ronkonkoma to Conversano | 4,476.19 mi (7,203.73 km) |
| Ronkonkoma to Copertino | 4,543.72 mi (7,312.40 km) |
| Ronkonkoma to Copparo | 4,107.14 mi (6,609.81 km) |
