The million-dollar question: how do I design my marathon training diet?
In this article, we’re going to simplify things. First, we’ll cover best practices when designing your marathon training nutrition. Then, we’ll cover how to nail down what you eat on race day. As you may have guessed, those are often two different things.
We’ll break down what to eat for your training runs, how to practice race-day nutrition, and everything in between.
YOUR MARATHON TRAINING DIET
For your marathon training, your diet should follow a few baseline fueling rules. However, most of the specifics will depend on what time of day you train, and how your training plan breaks up the mileage.
Some Baseline Rules
First, as a general rule, avoid complex carbs before a run. Complex carbs, such as sweet potatoes, brown rice, and quinoa, require your body to do a lot of work in order to digest them. And because a training run requires the same of your body, stick to simpler carbs before the run.
Second, if your run is 60 minutes or less, you typically don’t need to incorporate any excess fuel. Your normal, daily diet should be enough to fuel you through 60 minutes or less.
If your run is between 60-90 minutes, then you will want to take in some simple carbs or another quick energy source before you run.
If your run is longer than 90 minutes, you’ll want to bring some mid-run fuel with you. Because your marathon falls in this category, we will address this more in detail below. But as a general rule, bring some energy gels (or whatever your preferred mid-run snack is) on any run longer than 90 minutes.
Third, be mindful of sports drinks. While most of them are great in helping replenish electrolytes, many are extremely high in sugar. This impedes your muscle recovery and will prolong soreness unnecessarily. To fix this, find low-sugar sports drinks, or just dilute the ones you have by mixing them with water.
Lastly, keep your running goals and your food goals in mind. So, while a marathon requires intentional fuel to support long training hours, your food goals may further specify what you need.
If you are training for weight loss, consider talking to a dietitian or a nutritionist to design a meal plan that will sustain you, but will also further your body weight goals.
So, take the advice below with a grain of salt, and feel free to tweak any suggestions to meet your dietary needs.
For morning runs, you’ll want food that is going to sustain you throughout the day. However, that food does not necessarily need to be consumed before you run. If your run is 60 minutes or under, and you run best on an empty stomach, stick with that. Like we said above, 60 minutes or under: your normal diet will likely get you through.
On the other hand, if you need a little pre-run boost, use a little trial and error to design a meal plan that works. Some common morning pre-run snacks that runners love include a banana, a scoop of peanut butter, half of a plain bagel, or a piece of white toast or some other simple carb.
No matter what you do before your run, your post-run breakfast is going to be crucial to set up your day. Aim to incorporate healthy fats and complex carbs that will sustain you. Greek yogurt with mixed berries, and whole grain toast with avocado, are great post-run breakfast options.
If your run is under 60 minutes and you’re running in the afternoon, no extra fuel is needed. Your lunch will hold you over. And on that note, play around with what time you eat lunch relative to your run. If you run best on a relatively “empty” stomach, move your lunch to earlier in the day so that you can digest everything before you head out.
If your is longer than 60 minutes, the same pre-run suggestions above might work. Try a banana, a scoop of peanut butter, or a handful of nuts before you head out.
And if your run is 90 minutes or above, remember to pack some mid-run fuel, discussed below in the race-day practice discussion.
Evening runs vary depending on whether you’re running before or after dinner. If it’s before, treat it like an afternoon run. Let your lunch digest, and then only add in additional fuel if your run will be longer than 60 minutes.
If your run is going to be after dinner, consider eating an earlier dinner to let your food digest. In addition, try to simplify your dinner’s protein sources, fats, and carbs, so that your body has an easier time digesting it all as you head out.
Practicing for Race Day
For marathoners, when you head out on race day, you will be embarking on a run longer than any of your training runs. This means you’ll need to do more work to maintain your energy levels than you’ve had to do during training.
Having said that, not all mid-run snacks are created equal for all runners. Some runners prefer energy gels or blocks only. Other runners opt for something salty, such as potato chips or pretzels during a race to help replenish electrolytes.
Your body might actually prefer simpler foods, even if they seem less healthy. After all, simpler foods are easier for your body to process.
The only way to nail this down is to practice. Find out what foods won’t slow you down.
For every 90+ minute training session in your marathon training plan, try out different mid-run snacks and drinks until you find the ones that work for you.
And as is the case with any good experiment, try to make your long run mid-run snack the only variable here. Keep your pre-run routine consistent on long-run days so that you can be sure that your mid-run snack is what’s making the distance.
Note that all runners are different here. What works for your friends might not work for you. Stick to what you know, and set yourself up for individual success on race day. If the aid stations won’t have what you need, pack it with you or have supporters set up to give you what you need.
Design your training nutrition by the book, but design your race-day nutrition plan based solely on what YOU need.
Your marathon training diet will take thought, but it can definitely meet your normal dietary needs and goals.
In addition, when training, place a major emphasis on your recovery diet so that you can hit your next training session hard.
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