Go for it. We have met many people out on the trail older than you===and I seem to recall that some of the members of this board fall into that category. My wife and I are in our youthful sixties.

One suggestion I would make is to get a nice sleeping pad. As we get older, we are less comfy on the bare ground. The money we spent on a Neo-air mattress is well worth it to us.

Hope to see you out on on the trail soon!