I have booked a trip with Overseas Adventure Tours thatstays 2 nights in Cuzco and then uses a bus to go to Machu Picchu, ie. I am not hiking the Inca trail. Their literature states "must be able to walk 3 hours and participate in 6- 8 hours of physical activities per day". I am 70 yrs. old and in pretty good shape. I feel confident I can walk that far if it is not one continuous walk. Unfortunately, they haven't been very helpful in providing any other guidelines.I very much want to see Machu Picchu but am concerned about the requirements. I am assuming I will not walk through the ruins, but hope I can at least vue them and walk to whatevever part I can manage. I would appreciate any comments on the suitablity of my making this trip.