Fishdr, thanks for your posts. I'm just starting to think about triathlons, too, but I feel crazy for thinking it. I used to swim, so I'm not worried about that, and I currently bike and not worried about that. But, I haven't run in about 20 years, when I injured my knee running too much in college. I am worried about my knee holding up.

I have a friend who did her first Ironman last year at 50yo, and she is trying to talk me into training. She did a lot of walking on the run portion. That is something that lures me into considering it.

I'll be interested to hear how it all goes for you!