Two fit adults running outdoors for endurance training under a blue sky — woman in black sports bra and blue shorts and shirtless man in black shorts jogging past trees in a park-like setting.

Marathon Supplements

Marathon training is a months-long commitment, and race day is the ultimate test of endurance. Getting your nutrition right by fuelling long runs, replacing electrolytes over hours on your feet and recovering between sessions allows you to build mileage without breaking down.

True Protein's marathon range gives you the endurance fuel, hydration and recovery support to train harder, taper smarter and cross the line strong.

Explore True Protein's Marathon Range
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  • True WPI 90 whey protein isolate 1kg white resealable pouch – True Protein brand, New Zealand-sourced, 100% grass-fed, low-lactose, no added sugar (product studio shot)

    WPI 90

    Our purest whey protein isolate for lean muscle

    From $48
    From $48
    Quick buy
  • Collagen + Vitamin C

    Collagen

    Hydrolysed peptides for skin, hair, nail, and joints

    $48
    $48
    Quick buy
  • True electrolyte advanced hydration powder pouch 240g, tropical flavour, blue gradient resealable pack, True Protein, made in Australia

    Electrolyte

    The essential mineral blend for optimal hydration

    $45
    $45
    Quick buy
  • New Look
    True Protein Magnesium+ 250g pouch — Lemon Burst flavour

    Magnesium+

    4-in-1 Essential Vitamin and Mineral Formula

    $50
    $50
    Quick buy
  • True Endurance carbs + electrolyte blend pouch, 600g tropical flavour, pink-red resealable sports drink powder by True Protein – 20 serves, gluten-free, lactose-free, proudly made in Australia.

    Endurance

    Sustained energy for endurance sport performance

    $68
    $68
    Quick buy

Learn More About True Marathon Supplements

Endurance

True Endurance delivers rapidly absorbed carbohydrates, essential amino acids and electrolytes to fuel working muscles and delay fatigue, making it the cornerstone of long-run and race-day energy.

Electrolyte

True Electrolyte replaces the sodium, potassium and magnesium lost over hours of running. Its fast-absorbing hypotonic formula helps you avoid the cramping and hydration crashes that end races early.

WPI90 (Whey Protein Isolate)

True WPI90 provides lean, fast-digesting protein to repair muscle between demanding training sessions, so you bounce back ready for the next run on the plan.

Magnesium+

True Magnesium+ supports muscle recovery, reduces cramping and promotes the restorative sleep that a high-volume marathon block depends on.

Collagen + Vitamin C

True Collagen + Vitamin C reinforces tendons, cartilage and joints against the cumulative load of marathon mileage, helping you stay injury-free through training.