Race Day Nutrition Demystified

The elusive 4th and arguably most critical discipline of long course triathlon!! In fact, I think we can safely say the discipline that can make or break an Ironman, Ultraman, 70.3, ultra marathon, 200 mile gravel ride and everything in between.

I have had many people ask me to help them with their “race day” nutrition and my 1st question is always write down what your race nutrition has been.

I know it is a very direct question but I generally always get a similar answer of X & Y pre-swim, this and that on the bike and a “plan” to get Z in on the run depending on how my stomach is feeling”.

All good answers and answers that are part of the puzzle for sure, but in my opinion maybe make up the central piece and we need to get the whole picture.

Piecing together your race day nutrition begins months before a race.

When starting a puzzle most of us start with the edge pieces and work our way in as the picture comes together. We should treat race day nutrition in the same manner and consider the following thought process:

  • Start with the corners - The corners would be your daily nutrition and what you are eating the two nights before your key training sessions while you are laying down the big miles.

  • Now onto the edges - This might be what you are eating the night before and morning off your big 6-8 hour brick sessions or that 140 mile ride or 40 mile run for an ultra.

  • Now that we have the corners and all the edges made we start to work our way in - This section is what you are putting into your body for the three days before the race. Have you practiced this time and time again? Have you put your body under stress with this nutrition to make sure it will sit well with you?

  • Then we have those final few pieces - This is what you consume on race day! If you have put together the corners, the edge and the infill correctly those final few pieces will fall into place and you will have no problems all.

I have seen many many times people "carb loading” like crazy when they have never done this in training. I have seen liquid consumptions 3X what people have trained using and 99% of the time it does not work out well.

In short, perfecting your race day nutrition starts 3-4 months out and we should treat it with as much respect as we do any leg of a triathlon or that last 10 miles of an ultra.




There are no contracts and no sign up fees. Each athlete will begin the process by filling out an athlete questionnaire. After the questionnaire is received, Rx3 Performance will set up a one hour phone consultation with the coach of your choice. The Rx3 coach will then begin building the specific, intuitive, and unique training plan to be delivered via software.


Athlete Services:

  • Intuitive training plan built weekly based on athlete’s availability/strengths & weaknesses/progression/goals

  • Unlimited communication via email/text/phone consult/facetime

  • Unlimited schedule changes

  • Benchmark testing/goal setting/race strategy

  • Feedback analysis via software comments/phone consult/facetime

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Bells & Whistles:

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  • Specific nutrition/hydration race strategy build on results of sweat test/lab testing

  • Capture software video analysis of specific sessions/races/performance management chart

  • Video analysis and feedback of biomechanics of any swim/bike/run/strength protocol


*Dynamic Coaching athletes will receive the same on-boarding process. Intuitive training plans will be built in 1 month blocks. Dynamic athletes will also have unlimited communication via email, and all feedback protocols given once per training block. Sorry Dynamic athletes, but no Bells & Whistles.


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