Length of a Link, Connection or Path Length of a Link Connection or Path On this graph, the length of link (2,3) is 4 km, and the length of the path between 1 and 6 (1-4-5-6; 3 segments) is 15 km. Share this:Click to share on LinkedIn (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Reddit (Opens in new window)