Constantly generating Navmesh destination for endless runner game

Im trying to make an endless runner game like in subway surfers/ highway pursuit games.

A clone copy of the level that ive created is always being constantly generated which is what i want since i want the player to be always moving forward but i cant get the nav mesh path to do this as well. I have an enemy thats always chasing the player using this nav mesh path but i cant get this nav mesh path to automatically be generated also as the world in the level is generated.

Does anyone know of a way that i can do this it would be really helpful or even provide a code sample of this