No it doesn't, in terms of distance it will give you how far you have travelled as the crow flies.
The diffence in everyday running is negligible anyway, as an example just apply Pythaogoras's theorem to a 10k run where you climb 500m over 5k and descend 500m back to the finish you add slightly less than 50 metres to the distance over the ground.
I don't think there's any credible non runner to marathon plan,the best you can do is follow some basic principles - a combination of long slow runs, medium easy runs, hard tempo runs and all out speed sessions. How you combine them and what benefit you get is quite an individual thing and will come from experience.
It's no good wearing yourself out on a long run, as you've seen you've ruined this week's "plan" So on level you've the achievement of running the furthest you've ever gone, but it's taken a lot out of you. So if the idea is to just run a long way, you've cracked it. But if you want to improve and train for a particular race, you've overdone it.
In the short term, rest and then go back to your shorter runs, then take it really really easy next time you do a long run and see how that goes.
In terms of your race, you're capable of 11 miles, I would think you'll find the other 2 miles in you on the day if you don't wear yourself out in the next two weeks