Oak, what will stop me from ever doing any longer distance running is the fact that my body will revolt and then I will be injured and not be able to do anything! Right now I feel very lucky that I have no shin splints, knee issues, etc. But, my lower back is aching and I have been having neck and head issues, despite the tremendous amount of stretching and yoga I've been doing. I have just been too lazy to go to the doc and get a scrip for PT. When classes are over next week, that's on my list. I also found out there's a massage therapy school, about 4 miles from my house and they have student clinics where massages are 25.00... so I will be paying them a visit, too.
MY DH is not too happy with me complaining about all of my various injuries, saying that I never rest. I do rest, but my body is just different than his. He rarely gets the kind of issues I get; once in awhile he complains he's "sore" from a hard climbing ride, but that's it. If he even knew about the amount of PT, chiropractic, etc that some of the people on this list get, he would faint.
So, my goal of a 10K is realistic for me. If I can do that, with no bad injuries, I might reconsider, but I think anything over that might be pushing it for me.