Hi Pearl, That is a pretty relative question...there are many versions of this trip. Some of the tours intertwine with each other. In my example, my wife and I (both 60) took a 3 day tour. We met up with others who took a 4 day tour (all in their 30's). Our tour was very mildly strenuous while the 30 year old were on a rigorous trail. Pick carefully.

We aren’t too sporty and did the jungle tour last week. It’s not too tough, but I’d recommend getting the bus to Machu Picchu on the last day - it’s a tough hike otherwise.