Running 100 Miles in February

My name is James Bell. I have decided to raise money for Dementia UK by challenging myself to running 100 miles in February. I have chosen Dementia UK as I have experienced it within my family and would like to help others going through this heartbreaking illness. Anyone who knows me personally will understand this is a huge challenge for me as i am extremely unfit. However I want to prove friends, family and most importantly myself that I can do it while contributing to an important charity. I would hugely appreciate any size donation. Thank you.