Too Much or Too Little

Congrats to my teammates who have completed their back to back walks. I mean 22 and 20 miles in a weekend are great and will serve you well in your journey. While I cheer your accomplishments I worry about you also.
Long long long time ago I ran marathons. My training method was that I knew I would be out on the road for at least 3 hours so that is how I trained. Basically if I could run 3 hours, I could finish the course. I approached my first 3 day event in 2001 in the same way. I calculated how long it took me to walk a mile and then figured out how long it would take to do 20. I did not include pit stops and lunch. So what I have found is that if I can walk 15 miles with no stops for potty, snacks, or water (I do carry water and hydrate) I can do the 20 in the event. I have done this for this year's journey and am now wondering if it is time to scale back.
You see, I would hate to go out this weekend, walk 15 or 20 and get blisters, wreck my knee, throw a hip, etc, etc. Now is the time to lay back. Know you can do it. Get your head into the game (cause folks the last 5 miles is on guts alone). Make sure you do not hurt yourself.
This is totally my personal training plan and I recommend it to no one else. I also prep for the first day by drinking lots of beer and eating the largest steak the waiter will serve the night before so that tells you how healthy I am.
Anyway, to my fellow travelers out there, be careful in these last few weeks. You do not want to miss the event. It is well worth the effort, blood, sweat, and tears you have put into this experience so far.
And oh by the way if you haven't donated yet you can still click on the Donate Here link and help make a difference (what would a post be without a beg for $$?).