Why Miami Marathon Runners Fear "Healthy" Gels
By Franklin Everett ShawEver felt like your stomach was staging a revolt halfway through a long run? You’re not alone, especially if you’re training for the Miami Marathon or any endurance event in the Sunshine State. Many athletes are reporting significant gastrointestinal (GI) distress from seemingly innocuous energy gels, and the problem seems particularly acute in Florida.
Why is this happening, and what can you do about it? Let’s dive into the sticky, sometimes unpleasant, world of endurance fueling in the Miami heat.
The first culprit is, unsurprisingly, the heat and humidity. Miami’s climate is brutal, especially during peak training season.
Your body prioritizes cooling itself over digestion when the temperature soars. This means blood flow is diverted away from your gut and towards your skin, slowing down the absorption of nutrients from those energy gels.
The result? Undigested carbohydrates sitting in your stomach, drawing water into your gut, and leading to bloating, cramping, and the dreaded runner’s trots.
Another factor could be the specific ingredients in popular energy gels interacting with the typical South Florida diet. Think about it: arepas, croquetas, and strong Cuban coffee are staples here.
These foods, while delicious, can be heavy on the digestive system. Introducing a concentrated dose of sugars and artificial sweeteners from gels on top of this can overload your gut.
Some athletes are particularly sensitive to certain ingredients like fructose, maltodextrin, or artificial sweeteners commonly found in gels. These ingredients can be poorly absorbed, leading to osmotic diarrhea.
Anecdotal evidence from local Miami running groups points to specific brands and gel types being more problematic than others. Gels with a high concentration of fructose or those containing artificial sweeteners like sucralose seem to be frequent offenders.
Maurten gels, while popular, have been reported by some runners as causing issues, possibly due to their high carbohydrate concentration and unique hydrogel technology, which may not agree with everyone’s digestive system in the heat. SIS (Science in Sport) gels, particularly the isotonic variety, are generally better tolerated by some, but individual responses vary greatly.
So, what’s the solution? It’s time to ditch the one-size-fits-all approach and personalize your fueling strategy.
First, consider switching to real-food alternatives. Dates, bananas, and even small pieces of sweet potato can provide sustained energy without the artificial ingredients and concentrated sugars found in many gels.
These whole foods also offer electrolytes and other nutrients that can help combat dehydration and muscle cramps. Experiment with different options during your training runs to see what works best for you.
Second, focus on hydration. Dehydration exacerbates GI distress.
Drink plenty of water and electrolyte-rich sports drinks throughout your training runs, especially in the Miami heat. Consider adding electrolyte tablets or powder to your water to replenish lost sodium, potassium, and magnesium.
Third, practice your fueling strategy during training. Don’t wait until race day to try a new gel or fueling method.
Experiment with different gels, real-food alternatives, and hydration strategies during your long runs to see what your body tolerates best. Keep a food journal to track your fueling and hydration, noting any GI issues you experience.
Fourth, consider consulting with a Miami-based sports nutritionist. A registered dietitian specializing in sports nutrition can help you develop a personalized fueling plan tailored to your individual needs and the demands of the Miami climate.
They can assess your dietary habits, training schedule, and sweat rate to create a strategy that minimizes GI distress and maximizes performance. Look for someone familiar with the specific challenges faced by endurance athletes in South Florida.
Fifth, pay attention to timing. Consume your fuel in small, frequent doses rather than large, infrequent ones.
This allows your body to absorb the nutrients more efficiently and reduces the risk of overloading your digestive system. Aim to consume a small amount of carbohydrates (around 30-60 grams per hour) every 30-45 minutes during your long runs.
Sixth, consider the timing of your pre-run meals. Avoid high-fat, high-fiber, and spicy foods in the hours leading up to your run.
These foods can slow down digestion and increase the risk of GI distress. Opt for easily digestible carbohydrates like oatmeal, toast, or a banana.
Seventh, be mindful of the water quality. While Miami-Dade water is generally safe, some runners find that using a water filter or opting for bottled water during training can help reduce GI issues.
This is especially important if you’re running in areas with older infrastructure.
Eighth, consider the impact of stress. Race anxiety can wreak havoc on your digestive system.
Practice relaxation techniques like deep breathing or meditation to manage stress and reduce the risk of GI distress on race day.
Ninth, don’t be afraid to adjust your fueling strategy on the fly. If you start experiencing GI distress during a run, slow down, take a break, and adjust your fueling accordingly.
This might mean switching to a different gel, reducing your intake, or simply focusing on hydration.
Finally, remember that everyone is different. What works for one runner may not work for another.
Experiment, listen to your body, and find a fueling strategy that allows you to perform your best without sacrificing your comfort. The Miami Marathon is a challenging race, but with a personalized fueling plan, you can conquer the course and avoid the dreaded runner’s trots. Good luck!