You know, as someone who's cranked out more than a few century+ days on bikes, as long as your stomachs OK with it that doesn't sound terrible.

It's got carbs, proteins, and fats, which will all metabolize into energy at different rates Presumably rather a lot of salt too is in bar pizza.

Wins all around I say. I'd personally be a bit wary of food like that were it me, but proof is in the mileage I guess.

I thought conventional wisdom was that fettuccine Alfredo was the best food to gorge on during a long run.

That pizza looks like trash though

Didn't Read the article, but when I was training for my first 50k and running with others training for even longer (100mi) distances one Thing's you start to learn is you need real food, not just 50 gu packets of sugar, and funny enough left over pizza was one of the carried good items, it's got carbs and protein and is pretty packed with calories.

You are doing everything you can to bring in calories after a while out there.

Surely you will not regret wolfing down nine slices of unrefrigerated leftover bar pizza while running 100 miles across Massachusetts, chasing your wife who is ahead of you, raiding every aid station.