Hi I could find road big pieces but are there any trail pieces ? smaller sized roads?

There are road chunks but that's it. No 'trail' pieces since trails are just textures on the ground, not actual pieces like roads.

A combination of LDirtPath01/LDirt01/LDirt02, maybe some of the stockade pole pieces, and road chunks usually makes for a pretty good wilderness trail.

problem with this is that only 4 textures per Cell is allowed , if I use 3 just for path then remains me just one for surroundings .

6 Textures are allowed! Should be rly enough.

Oh, sorry, I wasn't implying all of them be used just for one cell, I was simply trying to suggest that one of the three (or even a custom dirt texture) is usually good for a trail depending on the environment you're working in. But Unkownx12 is right, it is 6 textures per each quad of a cell, not 4.