Endurance athletes have different supplement needs than strength athletes. While the gym is about power and pump, long distances are about energy supply, hydration, and recovery. Here's what actually helps – without hype and without questionable substances.
The Problem: Glycogen Stores Are Limited
Your glycogen stores last for about 60–90 minutes of intense exercise. After that, energy supply becomes the limiting factor. Your body shifts more to fat burning – which is slower and provides less energy per unit of time. The result: performance crash, the dreaded "bonk."
Before Training (Pre-Workout)
### ☕ Caffeine
Even in endurance sports, caffeine is king. 3–6 mg/kg body weight, about 60 minutes before training. During endurance exercise, caffeine reduces your perceived exertion – you run the same pace but it feels easier.
### 🥤 Beetroot Juice (Nitrates)
200–400 ml about 2–3 hours before training. The nitrates are converted to nitric oxide and improve your muscles' oxygen utilization. Meta-analyses confirm a measurable benefit for endurance performance. This is one of the few natural performance boosters with solid evidence.
During Training (Intra-Workout)
### 💧 Electrolytes
During sessions over 60 minutes, you lose not just water through sweat but also sodium, potassium, and magnesium. An electrolyte drink (or a pinch of salt in water) can prevent cramps and maintain performance. Especially important in heat.
### 🍌 Carbohydrates
For sessions over 60–90 minutes, fast carbs can maintain performance. Iso drinks, gels, or a banana provide quick glucose. Sports guidelines recommend 30–60g carbohydrates per hour for efforts over one hour. This isn't mandatory for every recreational athlete, but can make the difference during long sessions.
After Training (Post-Workout)
### 🥛 Whey Protein
Forget complicated amino acid combinations. A simple whey shake with 25–40g protein after training is perfectly sufficient to kickstart muscle protein synthesis and begin recovery. Whey already contains all essential amino acids in optimal ratios.
### 🍚 Carbohydrates for Glycogen Replenishment
After long sessions, you should consume carbs quickly – ideally within the first 2 hours. A meal with rice, potatoes, or bread + protein is the simplest and most effective solution.
### 💊 Magnesium
Magnesium is lost through sweat and is essential for muscle function and recovery. Supplementing 300–400 mg/day can be beneficial for endurance athletes – especially if you sweat heavily.
The Foundation: Creatine for Endurance Athletes Too?
Yes! Creatine is often associated only with strength training, but it also improves recovery between intense intervals and can accelerate recuperation after long sessions. 5g daily – same as for any athlete.
Conclusion
Endurance supplementation is simpler than the industry would have you believe. The basics: caffeine before training, electrolytes + carbohydrates during long sessions, and protein + a complete meal afterward. Plus creatine and magnesium daily. Everything beyond that offers no relevant benefit for most athletes.