Proof that I Hit the Marathon "Wall" Very Hard

In my last post, I examined my three best marathons ever, and decided I still had some work to do as far as holding pace past mile 15. For this post, I decided to average the pace per mile from all six of my previous marathons and then graph the results. Here's the graph I came up with:

Hitting the Wall with a Vengeance!

There are five distinct phases to my marathons:

1. Miles 1 to 8 "Yo-Yo Paces": During the initial eight miles, my pace is as low as it is going to get. This is bad. I also have issues surging then falling back. For example, miles one, two and three are: 7:25 down to 7:11 up to 7:23. This yo-yo style running is bad as it burns up energy needlessly early on. 
2. Miles 9 to 13 "Already Slowing": After mile eight, I settle into a groove, but am already slowing down from 7:22 to 7:31.
3. Mile 14 "Surge": I try to throw in one last surge after the halfway mark which I think will get me back on track. 7:24.
4. Miles 15 thru 19 "Calm Before the Storm": The surge doesn't last long as I jump from 7:24 back into the upper 7:30s then by mile 19 I run my last mile under 8:00.
5. Miles 20 thru 25 - "The Wall": The wheels don't just fall off right at mile 20, they EXPLODE and my car goes screeching to a crawl as I ride on the rims. My pace jumps from 8:05 at mile 20 to 9:45 at mile 25.
6. Mile 26 thru 26.2 "Kick": After riding on the rims for so long, my wheels get a little tread back, and I'm somehow able to mount a slight comeback as I head for home and gain energy from the cheering crowds near the finish line.

Bottom Line: By looking at the average mile paces of every marathon I've run, I can conclude that I do hit the wall, as much as I've told myself I don't. In any case, I have to devise a plan so I can turn this graph around so the high numbers are on the left and the low numbers are on the right, or they are all the same number!