That's great - sounds like you should have a very good shot at doing Boston then. I am not even sure what my qualifying time would be now - something like 3:30 maybe? One of my friends in Chicago was trying to qualify using the MEN'S time as her goal! She didn't get it - had a hard race - but easily met the women's time.
I am up to about 15 miles now on the long runs - supposed to do a 16 mile run this weekend but my training has been screwed up with trips to the US (first week of April), Paris (last weekend) and Sardinia (this weekend). Hard life, yeah I know (quite lucky me!). Anyway I think I'll be ok but am a bit worried. I will see how it goes this week - I am now running my long runs on a weekday because of the weekend trips. I'm supposed to do 4-8-4 or something like that during this week and then the 16 for the long run. Next week is supposed to be 18 - yikes!
I run alone although my husband meets me sometimes part way through. He is only up to about 7 miles. As long as I have my iPod I seem to be ok.
My original goal was to do 4h but now I know I won't get that because of the training schedule that I've messed up. I did Chicago in 4:30 so anything under 5h for Edinburgh will be fine for me. Heck even over 5 is ok since Edinburgh is so much hillier than Chicago. It is very tough to get a place in London (I tried) unless you are doing it for a charity so that's why I did Edinburgh. Also I've never been there and it seemed like a fun place to visit. Finally I hate training in the cold - one of the best parts of doing Chicago is training during the summer - and I was not going to do any long long runs in London rain! So June seemed to be a better time for me. I'm thinking of Paris next!