Best Supplements for Endurance Performance
Endurance athletes need optimised oxygen delivery, efficient energy metabolism, electrolyte balance, and inflammation management to perform at their best over sustained efforts.
Top 5 Recommended Supplements
Beta Alanine
3.2-6.4g dailyIncreases muscle carnosine for acid buffering. Benefits efforts lasting 1-10 minutes and repeated high-intensity efforts within endurance events
Buy on Amazon →Beetroot Juice/Nitrates
400-800mg nitratesIncreases nitric oxide, improving oxygen efficiency by 3-5%. Equivalent to 500ml beetroot juice 2-3 hours before exercise
Buy on Amazon →Caffeine
3-6mg/kg body weightReduces perceived exertion, enhances fat oxidation, and spares glycogen. Proven ergogenic aid in every endurance study
Buy on Amazon →Iron
Monitor ferritin levelsEndurance athletes are at high risk of depletion. Ferritin should be >50 for optimal oxygen transport. Test regularly
Buy on Amazon →Sodium Bicarbonate
200-300mg/kg 60-90 min beforeBuffers blood pH, delaying fatigue in high-intensity endurance efforts. GI discomfort is the limiting factor
Buy on Amazon →Sample Daily Stack
Daily: Beta Alanine (3.2g split doses) + Iron (if needed) — load for 4 weeks
Race day minus 3h: Carb-rich meal
Race day minus 90min: Sodium Bicarbonate (200mg/kg) in water (test in training first)
Race day minus 60min: Beetroot shot + Caffeine (3-6mg/kg)
During: Electrolytes + Carbohydrates (60-90g/hour for efforts >90min)
Lifestyle Tips
Periodise nutrition — train low (carb) occasionally, race high (carb loaded)
Practice race nutrition in training — never try anything new on race day
Build aerobic base with Zone 2 training (80% of volume)
Address iron status proactively — test ferritin every 3-6 months
Altitude or heat acclimatisation provides additional endurance benefits
Recommended
This information is for educational purposes only and does not constitute medical advice. Supplement recommendations are based on published research but individual needs vary. Always consult a qualified healthcare professional before starting any supplement regimen. Amazon links are affiliate links.