Thanks Lulumum and my PB was set on no meat
I find that I run easier on days without meat, sounds odd I know. Your times may not change much but it will feel easier and lighter. I think there is a lot of science behind it. For me its easier to think of it in a hunter gatherer way.
"Hunting" starts when my system is void of meat and I must track it down.
When "hunting" I eat what is available, fruit, seeds, things that are light and easy to digest as I have to be ready to hunt my "prey" at anytime.
Once I have caught my "prey" (finished my long run) I can then consume my meat and get down to resting and digesting my kill.
2 days later the meat is digested and the "hunting" begins again with smaller targets at first, building up to the main kill at the end of the week.
Strange way of describing it I know but it works for me and is logical in my mind!
So I am not a vegetarian, I just choose to be meat free until after my long run when my body has time to concentrate solely on digestion and repairs.
The weekend may still see me eat veg but usually I will eat some meat or fish as well.....I like it! 
HRHB - sure thing! now how the hell do I do that? ha ha ha The site looks great!
Ive never used a heart rate monitor but would happily direct people to your page in exchange for a nod at mine! 