Huge question

It's been forever since I posted on here! No time to explain why I've been away, but I have a pressing question. If anybody has some honest advice (which means don't worry about hurting my feelings) I could use it. I'm afraid I'm about to do something stupid!

There is a marathon here on Sep 19. A marathon is certainly not something I'm trained up for. But I can't get over the overwhelming temptation to do it, not to mention the peer pressure I'm feeling from two others who also are not trained up and are novices. Are we stupid or what? Here are the pros and cons:

Pros:
It's a marathon. I've never done a marathon. I would love to be able to say I've done a marathon.

It's local and the most it would cost me is $60 if I waited to race day to sign up=dirt cheap and no travel.

Bragging rights: it's supposed to be the second hardest marathon in North America, behind the Pike's Peak one. And I may not be here next year to try it then.

It will snow the week after so that is the last running race of the season.


Cons:
It's a trail run. Which means hills, hills, and did I mention hills? Also means no spectators along the way to cheer us on.

I'm not trained up for the distance or the hills and I've never run a marathon. If it was a 10-miler, no problem. If I did it, I would plan on walking a good portion of it, which means it would take me 7-8 hours.

I only have 2 weeks to add some mileage or hills to my training.


The biggest con is, obviously, that there's a chance I'll hurt myself. That's why my husband doesn't want me to do it. So somebody talk some sense into me and tell me that peer pressure is bad before I go and do something stupid! Or if you think it's possible, give me all the advice you can to help me out!