Walking 60 miles for Komen in Chicago and hoping I make it!!!

So - I'm starting to train for the Susan G. Komen 3-day 60 mile walk in Chicago in September. As a Survivor I am very passionate about finding away to eradicate breast cancer. I lost a cousin at the age of 36 and then was I was diagnosed at 39. I am currently an eleven year surviver and going strong. If any one has any suggestions for training or a great type of walking shoes I am open to all suggestions!!! I want to make his a great success and a trip to always remember for my friends and I!!!