Go for it, I did a marathon last summer while I was training to do triathlons. I didn't really train for it I just upped the distance on my run sessions to about 12 miles which I know is way short. But I really wanted to do one and thought I would just go for it.
So glad I did the most enjoyable and painful run I have ever had and the elation when you get to the end and realise you have done it is sheer heaven.
So go for it lee
Thanks for the encouragement. I'm currently signed up for 3 half marathons this year and I'm going to do one more. Then my 2014 goal will be a full. I have to spread them out. The only way I keep running is when I have something to run for. Otherwise I have too many excuses as to why I can't run. Congrats on your marathon & triathlons. Triathlons don't interest me. I hate biking.