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!
"The best rides are the ones where you bite off much more than you can chew, and live through it." ~ Doug Bradbury