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Peak Performance for Endurance Athletes


Sunset beach run in California

I was watching my 4 year old run around at the beach the other day with so much energy, curiosity, and playfulness, and I thought to myself, this is what I want for myself, my loved ones, and my clients - to fuel ourselves in a way that supports health and allows us to explore, have fun adventures, and do the sports and activities that we enjoy, for as long as possible.


This is a work in progress for everyone, myself included, and we obviously must set realistic expectations and timelines for what our bodies can do depending on our unique situations, but nutrition truly is powerful and transformative. I'll give a personal example.


TL;DR - I just launched a 7-part self-paced course that will help you transform your everyday and performance nutrition, as I did with my own!


Distance running - the hobby that I LOVED - stopped being fun for me when I was in my late 20s. I was working a corporate job I hated, and chasing marathon and half marathon PRs to the point that it became an unhealthy obsession.


I had NO clue how to fuel myself as an endurance athlete, and my mindset wasn't where it needed to be either. I was way more concerned about my body size and running speed than my health, and I believed the BS that "lighter = faster." It led to me feeling and performing like crap, and sucked the enjoyment out of my sport.


The behaviors from my eating disorder (which I had on and off from high school through my early 20s) were behind me, but disordered eating thoughts and tendencies were still there. When I wasn’t trying to lose weight, I was trying to eat “enough” but didn’t really understand what that meant. The result was chronic underfueling in my everyday eating and surrounding exercise. My initial “success” as a recreational athlete soon faded into the not-so-fun world of burnout, plateaus, fatigue, and injury.


It took moving countries, going back to school to become a sports dietitian, and lots of work on my own nutrition and mindset to drag me out of that miserable hole. My running mojo came back, I started to fuel the work I was doing, I hit a few PRs, then I let go of time goals, embraced beautiful trail running adventures, found new challenges in the ultra world, and focused on staying healthy and strong. Happy place unlocked. Energy, curiosity, and enthusiasm achieved.


But if I’m being REALLY honest, it took me becoming a mother to stop believing that my body needed to be a certain size. Not for performance, but for myself. I finally was able to prioritize nourishing and caring for my body rather than trying to control and shrink it. I accepted that my body would always be changing.


So how did I go from barely fueling my runs and being terrified of GI issues after a traumatic race experience to crushing my fueling everyday and during exercise?


  • I started to eat ENOUGH (esp carbs) and focus on consistent meals and snacks each and every day (even on rest days).

  • I identified and slowly chipped away at the food rules, fears and beliefs that were holding me back, while learning how much nutrition my body needs for health and performance!

  • I learned that underfueling, eating the wrong things before runs, having no hydration plan, and not training my gut were the things causing my GI issues, not my "sensitive stomach.” Once I worked on these things, I never had to 💩 between two cars on the side of a major marathon course ever again!

  • I found out that I needed more than plain water during endurance exercise. Turns out I’m a very salty sweater and for years, I was taking ZERO salt. Oops.

  • I learned flexibility in fueling, and no longer felt the need to travel with my specific brand of spaghetti to eat the night before a race. I could actually trust rather than fear my body, because I was finally nourishing it.

  • I learned to fuel the sh*t out of my long runs, even though I knew I could get away with less. With gut training, I thrived on a variety of foods and sports products, and experienced the massive health and performance benefits of fueling enough.

  • I stopped feeling exhausted after long runs, because I learned how to help my body recover fully after I was done.

  • I learned how to carb load and put together a kick-ass fueling plan, so that I could start my races confidently.

  • I got regular bloodwork done, and only supplemented when there was evidence to do so and food alone wouldn't cut it.

  • I focused on the root causes of nutrient deficiencies rather than slapping on a supplement bandaid.


Obviously, everyone's specific journey is different. But many of the over-arching concepts and goals are the same. I teach you ALL of the above and more in my new 7-part on-demand course, Peak Performance for Endurance Athletes: Your Ultimate Guide to Strategic Fueling.


By the end of the course, you'll know how to:

  • Nail your everyday nutrition while living your busy life

  • Navigate struggles with food and body image

  • Fuel and hydrate yourself before, during and after training and racing

  • Create a personalized fueling and hydration plan that is specific to your sport

  • Train the gut and troubleshoot common fueling issues

  • Navigate the confusing world of supplements.


Visit my Teachable school to view the entire course curriculum (including 8 hours of video content), watch a preview of Module 1, and read detailed FAQs.


Don't want to be tied to a screen? No stress - I include audio-only files so you can listen to the entire course podcast style. Don't worry about taking notes - you get 17 downloads (mini guides and worksheets) that capture the most important parts of each module.


Don't want a full course? You can just purchase the course downloads, individually or bundled at a discount.

​If you're not ready to purchase anything but you'd like to bring more awareness to your everyday and performance nutrition, check out my FREE Food Journal download​. It will instruct you on how to keep a descriptive food log, what to look for, and what questions to ask yourself so you can identify gaps in your fueling and where you should focus your attention to reach your exercise and health goals.


Questions? Email me at claire@eatforendurance.com.

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