True or false: Marathoners can eat whatever they want

runner's diet

Have you ever flirted with the idea of doing a marathon, so you could eat whatever you want?

Turns out that eating with abandon isn’t a good idea, even for long-distance runners.

In fact, experts say you should be more vigilant about what you eat while training for a marathon, when there are hydration, glycogen, and nutrition demands on the body. A marathon is not a highfalutin excuse to load up on pancake brunches.

Why? “People overestimate how many calories they’re actually expending and they underestimate how many they are taking in,” says New York City nutritionist Cara Anselmo, MS, RD, and a marathoner. “I think that’s the case all the time, but during marathon training it’s especially true.”


Instead of giving yourself a free pass to indiscriminately carbo load or eat meals twice the necessary size, distance runners should plan and pace marathon-training meals like you do your runs.

“If you want to maintain or lose weight, the only time you should eat a bit more is before a long run of more than six or seven miles,” says Ariane Hundt, a nutritionist, triathlete, and founder of Brooklyn Bridge Boot Camp. “I’m referring to more vegetables and some brown rice—not a bowl of pasta. Refined carbs will spike your blood sugar and leave you feeling empty and crummy in the morning—and they can quickly result in fat storage.”


Calorie-laden recovery beverages have become a justifiable junk food for runners.

“A lot of runner weight gain comes from protein shakes or sports drinks like Gatorade because they have excessive calories, and because people are having them in addition to meals and snacks,” Anselmo says. “Those muscle milk drinks have 400 calories—that’s a meal, not a snack!” Anselmo wishes more runners would reach for water, or Nuun tablets, since they provide electrolytes without sugar or calories.

Terence Gerchberg, a running and Brooklyn Bridge Boot Camp coach, who’s completed the past 14 New York City marathons, recommends refueling with a carb-protein combo, something like yogurt or almond butter on whole grain toast, which helps balance glycogen stores.


Of course, if you feel hungrier during marathon-training season—and a lot of runners do—let those added calories be from healthy foods. “Fill up on lean protein and lots of plant protein, and cook with beans, legumes, and whole grains (pasta, breads, quinoa) instead of white flour, says Anselmo. “But again, even with healthy foods, you have to watch the amount you eat.”

For Gerchberg, it’s a very simple formula: “It’s calories in versus calories out.”

Bottom line? Don’t use running as an excuse to eat whatever you want. —Katharine Herrup

More Reading

Running’s newest recruits? Yogis
Would you wear running shoes that came with a warning?
Coconut water: Should you keep drinking it?

Share This:

  • 1

4 Comments | ADD YOURS

  1. October 5th, 2011 at 5:46 pm

    […] Have you ever flirted with the idea of doing a marathon, so you could eat whatever you want? Turns out that eating with abandon isn’t a good idea, even for long…Read More>> […]

  2. October 24th, 2012 at 11:42 am

    I have been exploring for a little for any high quality articles or weblog posts on this sort
    of area . Exploring in Yahoo I at last stumbled upon this web site.
    Reading this information So i’m satisfied to express that I’ve a very just right uncanny feeling I came upon exactly what
    I needed. I such a lot surely will make certain to do not disregard this
    website and give it a look regularly.

  3. October 27th, 2012 at 3:28 am

    All of us have the capacity to eat whatever we want. It’s only on our own discretion.

  4. Sarah
    April 12th, 2013 at 10:13 am

    I wouldn’t think it’s a good idea for any athlete to eat whatever they want. I know I feel lazy after eating junk food, so I imagine they would too.

Leave a Comment (* required)