That's part of it and you could do that as a loop. I used to go up behind Urubamba, then to Quebrada Honda, on down to Kiteni, and then back up to Quillabamba and back to Ollanta. So I think the loop I'm suggesting is the road to the right of your shaded area, the next valley over. The road leaves Urubamaba from the east and I can't remember the name of the pass right now but it does connect with your shaded loop. So you can see that you'll need more time if you do the entire loop. But you don't have to; you can hitch a ride to the Abra in the back of a truck, do the downhill to Quillabamba, then maybe catch a ride back depending on how much time you have. They grow pineapples in Quillabamba so you are going from a high mountain pass down to the topics or at least subtropics.