Victoria Witrak, RD, a dietitian at PeaceHealth St. Joseph Medical Center in Bellingham, Washington, shares valuable insights about the essential do’s and don’ts for fueling your body before and during long-distance races, particularly marathons.
The Importance of Nutritional Planning for Runners
Every runner has unique metabolic needs and race objectives, making personalized nutrition critical. Witrak emphasizes the importance of focusing on incorporating nourishing foods into your diet rather than restricting certain items. One of her solid recommendations is to avoid introducing any new foods within a week of race day. This allows your body to adapt and become accustomed to the specific foods you plan to consume, minimizing the risk of gastrointestinal distress on the big day.
Understanding Carb-Loading: A Key Strategy
Carbohydrates serve as the primary energy source for endurance activities. Witrak explains that “carb-loading” involves increasing carbohydrate intake for two to three days prior to a race. This strategy enhances glycogen stores, which are crucial for sustained energy. To effectively carb-load, runners should aim for consuming at least 3-5 grams of carbohydrates per pound of body weight in the days leading up to the race, tailoring this amount to their individual training requirements.
Pre-Race Nutrition: What to Eat on Race Day
On the morning of your marathon, Witrak advises consuming a breakfast rich in both carbohydrates and protein about two to three hours before the race begins. A balanced meal, such as two pieces of toast with nut butter and a banana, should provide at least 50 grams of carbohydrates. Additionally, a light snack consisting of easily digestible carbs, such as a pureed fruit pouch, can be taken 15 to 30 minutes before starting. Hydration is equally important, and runners should aim for 16 to 20 ounces of electrolyte-rich fluids to ensure they are properly hydrated before hitting the start line.
During the Race: Proper Fueling Techniques
Maintaining energy levels during a long run is essential. Witrak recommends consuming 30 to 60 grams of carbohydrates per hour for runs longer than two hours. It’s vital to stick with the foods you’ve practiced during training, as introducing anything new can lead to digestive issues on race day. Some effective sources of carbohydrates during a race include dried fruit, fig bars, peanut butter and jelly, sweet potatoes, waffles, and gels, which should be tried during training to ensure gastrointestinal tolerance.
Hydration Strategies for Endurance Runners
Dehydration can significantly impair performance, as runners can lose up to two percent of their body weight due to sweat. To maintain hydration, Witrak recommends consuming about 16 ounces of water or electrolytes during the race and suggests including at least 300 milligrams of sodium per hour, adjusted based on sweat levels. However, it’s essential to avoid overhydration, as excessive water consumption can lead to hyponatremia, a potentially dangerous condition caused by low sodium levels in the blood.
Post-Race Recovery: What to Consume for Optimal Healing
After completing a marathon, recovery nutrition is essential for muscle repair and glycogen replenishment. Witrak advises consuming balanced snacks or meals that include protein and complex carbohydrates, ideally within 30 to 60 minutes post-exercise. Great options might include beans, oats, rice, sweet potatoes, and a variety of fruits and vegetables. Runners should also aim to replace 125 percent of quaisquer fluids lost during the race; chocolate milk serves as an excellent grab-and-go option for refueling.
Mindful Eating and Gastrointestinal Sensitivities
For runners with sensitive stomachs, it’s advisable to steer clear of certain foods that can cause digestive upset after racing. Potential irritants include high-fructose foods and beverages, foods rich in fat, fiber, sugar alcohols, and cruciferous vegetables. By being mindful and developing a personalized nutrition strategy, runners can focus on optimizing their performance and recovery while enjoying their passion for long-distance running.
Victoria Witrak, a casual runner herself, brings her expertise to the field with a master’s degree in nutrition and dietetics from Bastyr University in Seattle, complemented by a distance internship through the University of Texas—Houston. Her specialized interests in sports medicine and gut health make her insights particularly valuable for athletes looking to enhance their race-day performance and overall well-being.
