Do runners need as much protein as strength athletes?

Nearly. While strength athletes typically need 1.6-2.2g/kg, serious runners need 1.4-1.8g/kg. Running creates significant muscle damage (especially downhill and long runs), and protein is essential for repair. The myth that runners only need carbs is outdated.

Should I use protein during a marathon?

For races under 2 hours, carbs are sufficient. For longer efforts (ultra-marathons), adding 5-10g of protein per hour can reduce muscle breakdown and improve performance in the later stages. BCAAs or small amounts of real food (nut butter, cheese) work well.

Will protein make me heavier/slower?

No. Adequate protein maintains lean muscle mass, which improves running economy. Muscle loss from low protein makes you weaker, not faster. The minimal weight difference from proper protein intake is far outweighed by performance benefits.

What's the best recovery drink after a run?

Chocolate milk is surprisingly effective — it has a 3:1 carb-to-protein ratio that's ideal for glycogen replenishment and muscle repair. Alternatively, a shake with 25g whey protein + banana + milk provides similar benefits.

How do I prevent runner's anemia?

Include heme iron sources (red meat, dark poultry) 2-3 times per week. Pair plant-based iron (lentils, spinach) with vitamin C for better absorption. Consider an iron test if you feel unusually fatigued despite adequate training recovery.

Protein for Runners: Complete Nutrition Guide

Evidence & references

Reviewed and updated September 4, 2026

Figures in this guide come from the numbered sources below. Individual needs vary — this is educational content, not medical advice.

Sources

1.Phillips & Van Loon, 2011. Dietary protein for athletes: from requirements to optimum adaptation. Journal of Sports Sciences, 29(S1), S29-S38.
2.Jäger et al., 2017. ISSN position stand: protein and exercise. Journal of the International Society of Sports Nutrition, 14, 20.
3.Kerksick et al., 2017. ISSN position stand: nutrient timing. Journal of the International Society of Sports Nutrition, 14, 33.
4.Morton et al., 2018. Systematic review, meta-analysis and meta-regression of protein supplementation and resistance-training gains. British Journal of Sports Medicine, 52(6), 376-384.
5.Res et al., 2012. Protein ingestion before sleep improves postexercise overnight recovery. Medicine & Science in Sports & Exercise, 44(8), 1560-1569.