Here is a pic of the 3 day route that Eden and I completed last summer. If you are a good hiker with strong navigational skills then this route is attainable in 3 days. If you would are planning on doing either the north rim or long range and want some more info or beta on or route choice, let me know. We were told that the north rim was horrendous tuck bushwhacking, we experienced max 70-90mins of tuck.... We also chose a completely different route then the park suggested. I found the north rim to very enjoyable and the wilderness we were immersed in was amazing!