When it comes to achieving your best on race day, your training plan probably gets all the love—but what about your nutrition strategy? Proper fueling can be the secret weapon that takes your performance from good to amazing. Whether you’re prepping for a marathon, a 5K, or just aiming for a personal best at the gym, understanding how to fuel your body is key.
The Power of Carbs, Protein, and Fat in Athletic Performance
Your body needs three macronutrients—carbohydrates, protein, and fat—to function at its best. Each plays a unique role in performance, recovery, and overall health:
- Carbohydrates: Your body’s primary energy source, especially for high-intensity efforts. Think of them as your race fuel—easily accessible and efficient.
- Protein: Critical for muscle repair and recovery. Protein helps you bounce back stronger after a tough session. However, if you don’t eat enough carbohydrates regularly, protein will be converted to glucose (via gluconeogenesis) to provide enough energy for your hard-working cells.
- Fat: Provides long-lasting energy for endurance activities. But fat should not be part of your during training/race fueling….its too hard to digest. Fat also supports the absorption of key vitamins and maintains cell health.
Pre-Workout: Build Your Energy Reserves
Pre-workout nutrition is highly recommended for sessions lasting more than one hour or when performing two-a-day workouts. A well-executed plan ensures you’re fueled and ready to go.
3-4 Hours Before Training or Race:
- Eat a balanced meal comprising of carbohydrates, protein and color. This provides sustained energy and minimizes the risk of digestive discomfort.
- Examples: Pancakes with eggs and fruit, a turkey sandwich with fruit, oatmeal with milk and berries, or chicken with potatoes and vegetables.
1-2 Hours Before Training:
- Opt for a lighter snack with easily digestible carbohydrates and moderate protein. Limit fat and fiber to avoid stomach upset.
- Examples: A granola bar with a sports drink, yogurt parfait, or a fruit smoothie.
30-60 Minutes Before Training:
- Focus on fast-digesting carbohydrates for quick energy. Aim for 30-60 grams of simple carbohydrates like white bread, fruit leathers, fig bars, apple sauce or sports drinks.
- Examples: A banana with low-fat yogurt, a packet of applesauce, or an energy gel.
For race day, stick to familiar foods and avoid experimenting with new snacks or meals to prevent unexpected gastrointestinal issues. During non-key workouts, this is a good time to experiment with new pre-training snacks.
One of the most frequent questions I get is “well what do I do if I workout first thing in the morning?” Opt for the 30-60 minute snack. You can do this right as you’re walking out the door to the gym. Personally, I used apple sauce packets or a HoneyStinger waffle.
During Your Workout: Stay Fueled and Hydrated
For workouts or races longer than an hour, consistent fueling is key to maintaining energy and performance.
Carbohydrate Intake:
Consume mixed-source carbohydrates for workouts over one hour, increasing the amount of carbs for longer or more intense events/training. Use fast-digesting sources like sports drinks, chews, or gels.
Fluids and Electrolytes:
Aim for 5-12 oz of fluids every 15-20 minutes, ensuring you replace lost electrolytes. Sodium is particularly important to combat fluid loss and prevent cramping.
Optional Caffeine:
For a mid-race pick-me-up, 50-100 mg of caffeine can enhance focus and endurance.
Caffeine during the pre-workout time can be very beneficial for weight training activities as well.
Post-Workout: Recovery Is Key
After intense training or a race, focus on replenishing glycogen stores and repairing muscles with a combination of protein and carbohydrates. This supports faster recovery and prepares your body for the next workout. Stay tuned for next month’s blog post on post workout recovery nutrition! In next month’s blog we will discuss more details on how to make your post-workout nutrition work for your goals!
30 Minutes Post-Workout:
Consume a quick snack or meal containing carbohydrates and protein. This is especially important for those training multiple times a day.
Examples: Cottage cheese with fruit, pita bread with hummus, or a fruit smoothie with protein powder.
2 Hours Post-Workout:
Eat a larger meal rich in carbohydrates and protein to fully replenish your energy stores.
Examples: Grilled salmon with sweet potato and a side of greens, or a tuna sandwich on whole-grain bread.
Hydration: The Overlooked Game-Changer
Hydration is a critical component of athletic performance and recovery. Here’s how to stay hydrated:
Before Exercise:
Drink 16-24 oz of water 2 hours before training and another 7-10 oz 10-20 minutes prior.
If you are working out first thing in the morning, bring a bottle of water with you and try to finish that during your workout.
During Exercise:
Sip consistently, aiming for 6-12 oz of water or sports drink every 10-20 minutes. For longer sessions, include electrolytes—especially sodium—to enhance fluid retention and support performance.
Monitor Your Hydration:
Check your urine color. Pale lemonade suggests proper hydration, while darker tones signal dehydration. Avoid clear urine, which may indicate an overconsumption of plain water without electrolytes.
Why Fueling Matters
Proper nutrition isn’t just about enhancing performance—it’s about minimizing injury risk, improving recovery, maximizing muscle protein synthesis, limiting muscle break down and feeling your absolute best. By fueling smartly, you’re setting yourself up for success, whether you’re training for a marathon or chasing a new personal record.
Need help planning your race nutrition? As a registered dietitian specializing in sports nutrition, I can create a fueling strategy tailored to your goals and training schedule. Best of all, many insurance plans cover my services, sometimes with no out-of-pocket costs. Let’s crush your next race together— schedule your appointment today!
