1) from 8pm until noon next day - eat nothing, drink lots of water and 1 cup of coffee when I get up. On training days BCAA during the training and whey shake afterwards.
2) from noon until 4pm - eat 2 meals of proteins, fresh veggies and fats. Important here is no carbs!
3) from 4pm until 8pm - eat everything, and lots of it :)
Results are great! I am close to max strength now, my concentration is better than ever, sugar cravings are next to none. I lost 5kg of mostly fats. Subjectively I look better than ever.
To conclude, the best is to try - maybe it'll fit you, maybe it won't. You have nothing to lose :)
EDIT: formatting
In a normal (say up to half-marathon) running plan, getting faster and stronger by pre-feeding carbs feels good, but for the long distance it's a lot different.
If you want to set yourself up for a successful marathon, I'd say being skilled in fueling yourself during the run is probably more important than optimizing fat burning.
It worked great for about a month or so, and I lost a couple of kg. Then the cravings started, mostly for sugar. Could no longer focus at work, was irritable, exercise performance declined. I ended up gaining all the weight back + about 1kg or so before I decided to cut it off. Right now I'm on a predominantly plant-based diet for about half a year now, feeling great, faster and lighter than ever.
My point: if you're a (semi-)serious athlete with the same goals I had, by all means try it out, but don't expect a silver bullet. The overwhelming majority of athletes follow a normal diet schedule and eat significant amounts of carbohydrates. I encourage everyone to experiment with their body to see what works for them - it's the one thing that's all yours, after all. Just don't assume you're the exception.