I run about 10-12 miles a few times a week in my VFFs. Never had any issues, although I think it might be time for a new pair because I'm starting to get some hot spots. My only warning: watch out for stumps and rocks (if your on trails).. I've lost a few toenails because of them.

As far as nutrition goes I don't do anything specific. I probably keep carbs around 100g a day.. sometimes more, sometimes less. I eat lots of berries, sweet potatoes, etc.

I'm a runner too, and when I started Paleo I had a couple of weeks where I was slower and less energy while my body adapted. Now I'm faster and have more endurance than ever! You're already thru the Paleo transition, so I'm not surprised to see your pace is only 10s off where you were. I tend to (now) run fasted or with just a cup of coffee in me. I used to eat something (carbs), but don't need it now. As far as the VFFs - I also run in them. Nothing to do with Paleo, but START SLOW even coming from Nike Free's. I still use my Nike's for longer (> 8-10 miles) runs. Good luck!

I've never been comfortable in the VFFs (though I do run in Merrell barefoot shoes), but my husband has been training for a marathon with me in them and has had great success.

This will be my second marathon and first following paleo/primal and I can already tell what a huge difference it's made. Last year I was struggling with ulcers, fatigued muscles, and a slew of injuries. So far this year I've already shaved a full TWO MINUTES off my average mile time. The only injury I've had was when I took a nosedive on a train run and sprained my hand. I feel wonderful and excited for my race in October.

I work best on higher carbs, so I load up on sweet potatoes, especially before and after long training runs. Any run over 10 miles I'll take a little bag of raisins with me for a boost.

One (or perhaps more) of the paleo gurus have said that sprints and weight lifting were paleo, but not long distance running. That is pure nonsense. There are now south African bushmen who regularly run down game. We are mostly hairless so that we can stay cooler than our prey in the hot African sun.

Thanks to paleo and fermented foods, I did 4.88 miles yesterday in 60:25.00, my best so far. And I am 66 years old and had only 4.5 hours of sleep the night before. I felt great!!!

I mostly run 5K-10 mile races,

I tried coconut water. In the past I had used GU. It did not go well. Too sweet, gave me cramps (which I did not think it would).

Bananas, which previously I loathed, have become a great friend, especially before races.

One tip I have is that I try to run once a week near the end of my IF. It's either my tempo run or my long run. This really forces your body to fuel on fat. But you have to understand that your pace will be slower (you are running at a disadvantage). Run by feeling when you are running in a fasted state.