Peak marathon training

I'm now at the peak of my marathon training, completing my first 20 miler yesterday.  Thankfully, I didn't have to go it alone.  My friend, Chris (who is doing the IMS Marathon with me in 5 weeks) joined me.  He wasn't sure he could go the distance since he has been sick and not running too much, but he did great.  Tina (my BRB - best running buddy) is doing Carlsbad marathon next Sunday so she is tapering and couldn't join us.  She was missed!  I ran the 20 miles at exactly my race pace - even running the last 3 miles in a strong headwind - so I was relieved to get through it.  When I got home I took 2 Advil and rested a bit.  Today I feel fine - no soreness at all!  My friend, John (of Javelina Jundred fame) has been giving me some wonderful advice on hydration/nutrition.  He turned me on to Succeed SCaps! which are a little capsule you swallow whole with water every time you take a GU.  It's to replace electrolytes and works wonders!  Chris took some yesterday for the first time and said he felt great.  Now that I seem to have my system down, I just have to stay strong and injury-free the next 5 weeks till marathon day.  Wish me luck!