This was one of our favorite trips. I believe it was 2009 when we did the Treasures of the Aegean. The most challenging was the visit to "The Oracle", however, there were many places to stop along the path to rest, or stop and wait as the group would be coming down the same way. There were all ages in our group, and with short rests along the way, none of us had any problem making it to the top. We found that the entire trip you could do as much, or as little walking/hiking as you chose. The shipboard experience was wonderful.