Famous in the runner's world is Dr. George Sheehan with a quote...."We are each an experiment of one." It makes no difference what others eat, e.g.-some nothing for 50 miles and then only a bit of bird seed....
..... experiment for yourself by eating what you normally would for the effort you will be expending and adapt for the distances. I have a friend who stops for BBQ during 100 milers and if I did that I would puke.
First non stop 53 miles of yesterday's 114 miles began with breakfast of espresso, cinnamon Pop Tart, tortilla with almond butter and strawberries, Cliff Shot chocolate-cherry 100mg of caffeine. On bike bottles had Mtn. Dew Throwback and Crank Sports e-fuel and in pockets a banana, Crank Sports e-gel, another tortilla.
Back home for bike/kit change another espresso, blueberry Pop Tart, some dates then off with bottles replenished, almond butter tortilla, e-gels and some M&M Dark Chocolate Peanut candy
Two weeks ago for 307.8 miles of my 2017 Bike Sebring 12/24 Hour I also included Coke, McDonald's Egg McMuffins, Big Mac, regular M&M candy, Kosher Dill pickle wedges, Larabar-cashew/dates.
In my 2013 Ironman Florida I rode the 112 miles non stop with only water, e-fuel, e-gels, grabbed some bananas and orange wedges while riding through the fuel stops. Much greater effort so easily/quickly digest stuff.