2
P.S. but, now I am looking again and it is something strange - as if it is going via Marrakech? and it take terrible long time - so I don't really know how it is - yes maybe you need first to go to Marrakech and there take a train to Fes. So probably some directly bus just Tinerhir - Fes it is not.But you can take a bus from Tinerhir to Errachidia where you need to change to the other bus Errachidia - Fes.

