Fueling for your First Marathon
So you're up for a big marathon and have been checking all the boxes. You are logging tons of miles, nailing all your workouts, and even have your race day kit and shoes picked out weeks in advance. But, have you considered your marathon fueling strategy yet?
One of the most commonly overlooked aspects of marathon racing, is mid-race fueling. You body will endure a great deal of stress and will require carbohydrates and fluids to stay strong all the way to the finish line. The chances of hitting that "wall" are much less if you have been getting in a steady stream of calories and fluids throughout the race- But where should you begin?
Research shows that the body is able to process 40-60 grams of carbohydrates per hour during exercise. While it would be fantastic for everyone to have their own personal bottles out on the course, just like the elites, this is not possible. So…what do instead? I recommend taking water every 5k, about 6-10 ounces, and a bit more if racing in hot conditions. A trick I learned is to squeeze the cups at the top to get the most out of each. In addition to water, I recommend taking a gel every 5k as well. Gels contain about 20 grams of carbohydrates and are easy to stash in shorts, sports bras, and pockets. Gels, combined with water, are a great option to help keep you hydrated and fueled all the way to the finish.
If the idea of taking gels is not appealing to you, I recommend checking out the race website to see what sport drink will be offered out on the course. You can purchase this ahead of time and practice using it during your long runs to make sure everything sits right. Which brings me to the most important aspect of mid-race fueling, practicing your strategy ahead of time.
It’s important to practice using gels and fluids during your long runs and workouts to make sure your stomach is able to tolerate the calories. Your body will get better and better at processing mid-run fuel so nailing down a strategy early on in your build up is key. Without practicing ahead of time, you run the risk of experiencing mid-race GI distress-something no runner wants to deal with!
So hit your local running store and give a few different gel brands/flavors a try to see which one you’ll want on race day. You can also pick up many commonly used sport drinks at these stores as well. Practice your fueling strategy early on in your build up and often, then go check that final box! Happy Running!
Updated by Cally Macumber 1.26.24