night 0 = Cuzco
... catch a morning bus towards Abancay on the main highway
...ask to get out at the turn-off to Cachora (about 4 hours from Cusco)
... walk down to the village (90 minutes) you may be offered a ride in one of the few passing vehicles
... organize a guide and/or arriero & pack animals in Cachora, if you wish
... stay in one of several inexpensive basic hostels overnight
night 1= Cachora village (2850m)
... get an early start
... long descent down to the Apurímac river (take it easy)
... cross the excellent bridge
... ascend to Santa Rosa campsite (water, small shop)
night 2 = Santa Rosa
... get an early start
... ascend as quickly as you can to Marampata (2850m)
... set up your tent in one of the many lovely campspots
... ask permission first, of course, of the local people
... eat lunch, then head up to the ruins which are still an hour away
night 3= Marampata
... consider making a second visit to the ruins early the next morning
nights 4, 5, 6, 7 or more!
... continue past the ruins to the river Victoria (or Río Blanco on some maps)
... ascend (again) 2000m to the Victoria pass (4130m)
... continue to San Juan Pass (4200m)
... to the village of Yanama where you can buy basic supplies
... continue along the Otiyoc valley for 6-8 hours
... climb to the Choquetacarpo Pass (4600m)
... finish in Huancacalle
Bus from Huancacalle to Quillabamba, connect to Cuzco