Just back from celebrating my 40th in Peru. I made 3 traces while there -

Cusco to Machu Picchu by train
A loop from Cusco to the Sacred Valley and back
A walking route around the ruins at Pisac

I've started to add the train route to Machu Picchu - this is an interesting route because the train goes through points into a dead end and then the points are switched and the train goes on to climb up the hill.