Wow. I'm 52 and still struggling through chronic pain and fitness level problems to make my first 100 in a day. I can't see how getting 100 in on the SART is a problem...and coming Inland seems like a harder ride anyway. As for the rough parts of the trail- now that I live 2300 miles away from the SART, it sure is a lot better path than many other places have!

You are old enough to stop having to prove things to yourself or anybody else. Except maybe proving to yourself you can relax and enjoy yourself....have fun!