Marchon Supplements Peak Endurance

• Train harder for longer with enhanced oxygen utilisation and nitric-oxide–driven blood flow.
• Stimulant-free endurance support—no jitters, no crash, just steady performance you can feel.
• Clinically researched PeakO2® adaptogenic mushrooms to help increase power output and time to exhaustion.
• Concentrated beetroot extract (20:1) delivering 450 mg nitrates per serving to support cardio efficiency.
• Perfect for runners, cyclists, CrossFit and team sports—helps reduce perceived exertion and post-set burn.

MARCHON™ Peak Endurance – your daily advantage for oxygen-efficient performance

If your training is limited by burning legs, heavy breathing or fading pace, MARCHON™ Peak Endurance is built to change that. This advanced, stimulant-free endurance supplement combines clinically studied PeakO2® adaptogenic mushrooms with a high-strength beetroot extract (20:1) to support nitric oxide, oxygen delivery and ATP production—so you can maintain output when it matters most.

Why athletes choose Peak Endurance

• Make more from every breath: Support efficient oxygen use and muscular endurance session after session.
• Backed by research, dosed for results: A full 2 g of PeakO2® plus a concentrated beet extract equivalent to 30 g fresh beetroot.
• Performance without stimulants: Ideal for evening training, endurance blocks and competition days.
• Feel the difference in real training: Smoother effort, steadier pacing and less lactate build-up during repeat efforts.
• Built for UK endurance and mixed-modal athletes: From long runs and rides to CrossFit, HIIT, field sports and high-volume lifting.

How it works

PeakO2® is a certified-organic complex of six adaptogenic mushrooms—Cordyceps, Reishi, King Trumpet, Shiitake, Lion’s Mane and Turkey Tail—used to help athletes push harder for longer. When taken daily, PeakO2® is clinically studied to support increases in power output and time to exhaustion.

Alongside this, our potent beetroot extract (20:1) supplies a scientifically validated ~450 mg nitrates per serving to boost nitric oxide, improving blood flow and oxygen delivery to working muscles. The result: more sustainable pace, better repeatability and a noticeable reduction in “the burn.”

When you’ll notice the difference

• PeakO2®: Consistency is key—2 g daily for 14 days (28 g total) is where the biggest changes are typically felt; keep taking daily to maintain benefits.
• Nitrates: Many athletes feel an effect from a single serving, but 3–4 weeks of daily use helps maximise performance outcomes.

How to use for best results

• Take your daily serving at a consistent time; for training days, 2–3 hours pre-session is ideal.
• Use every day—build during training blocks and maintain through race or competition phases.
• Stack smart: pairs well with electrolytes and your usual carbohydrate strategy for long sessions.

Who it’s for

• Endurance athletes chasing stronger splits and steadier pacing.
• CrossFit and HIIT athletes looking to repeat high outputs with less drop-off.
• Field and court athletes who need sustained work capacity across halves or periods.

Ingredients & Nutritional Information

Key Ingredients

• 2g - PeakO2®: A dynamic blend of six adaptogenic mushrooms, including Cordyceps, Reishi, King Trumpet, Shiitake, Lion’s Mane, and Turkey Tail.
• 1500mg - Beetroot Extract (20:1): Equivalent to 30g of fresh beetroot, known for delivering a scientifically validated 450mg of nitrates per serving.
• Other Ingredients: Stoneground brown rice flour, Size 00 HPMC capsule.