Melissa,
I really admire you as I have malked 3 1/2 marathons for NF and it is one of the most rewarding experiences that you can have. Did you know that there is an Organized NF Marathon team. We walk and run in Marthons and Half Marathons all over the country. We have team shirts and everything. you should contact the head of our team and get a shirt and some team support. There may be others in the area that will walk with you and some to come down and cheer you on. Go to https://www.ctf.org/nf-marathon/the-mighty-nf-marathon-team/ you can also get yourself set up with a fundrasing page where people can go directly to the page and make their donations and it wll track all of your donations.
Good Luck
NF Marathon Team Member Gail