Did IMCA (first full) bonked on the run again!

Hi Triathlon mind hive!

I did my first full IM over the weekend at IMCA. I trained using a TriDot training plan and have had a coach for the last 13 months. I followed my training plan very closely and on race day, I took the bike very conservatively as I raced IM Michigan 70.3 a month and a half ago and also bonked on the run. But I definitely bonked worse this time! I was really on my nutrition the entire race. I had been taking Skratch super high carb but found that I wasn't good about drinking all my nutrition on the bike and so decided to take gels for this race instead with a weaker formula of super high carb in my aerobottle. I probably took about 80 carbs an hour on the bike. (1 gel every 30 mins, plus super high carb, plus my SaltStick chews every hour)

It's a little disheartening. I hung in there until mile 13 on the run, and went to a dark place mentally. At mile 17, I projectile threw up what nutrition I had in my stomach and had to stop to a walk/run and drink broth at the aid stations instead of sugar. Attached are my TriDot stats for my race predictions and race results.

Have any serial bonkers on the run figured out how to solve this problem? Not sure if it's a mental toughness issues, or a physical strength issue, or a not enough intense brick session training issue, or a nutrition issue. Going to recap with my coach tomorrow as well, but figured some of you may be in the same boat! For reference, my longest race rehearsal workout before the race was a 4 hour ride at race pace / 194W with a 1 hour brick run after at Z2 pace.

https://preview.redd.it/jl1d7jof1sxd1.jpg?width=1407&format=pjpg&auto=webp&s=827a9ea0171b23963cef654d42864dc65ff2cee9