Moving NavMeshAgent on random path

Hi, do anyone know the way to move randomly on NavMesh?
Let's say I have a map with two bases and three lanes connecting them, and I said to my NavMeshAgent that it need to move from one base to another. Agent will move on middle lane since it's the shortest, but is there a way to randomize it so my Agent will move on any lane/path he can find, without checking was it the most short or not?

 

The NavMesh will always try to find the shortest distance to a path. If you want to force the enemy to go down a particular lane, you can choose which lane, then choose the midpoint of the path to the other base as the first destination, once the agent gets there, set them to go to the other base