You go girl!! Last year I decided that I would backpack part of the Appalachian Trail during my spring break. I think It had something to do with turning forty the fall before! Most of my friends said no way, they would not go with me. I was inexperienced (read never back packed at all), women alone out there yada yada yada. I went. I made mistakes, I laughed my Butt off. It was awesome. I took my 13 year old son with me that same summer. Now I have friends that say, man I wish I would have gone with you. I smile and say...maybe next time.

Bottom line is - do it. What if you don't make it all the way? So what. Do it. It's fun and fills you with confidence. If you drop out, break down or otherwise cannot make it, there is no shame. The only shame is in an opportunity not taken.