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This is Eszter.

From Hong Kong trails to Western States podiums, Eszter Csillag has redefined what endurance success looks like. A PhD, a mom of two, and an elite ultrarunner, her fueling is built on science and consistency.

Shop Eszter's fueling pack

Gear That Powers the Long Run

Eszter’s go-to tools for staying efficient on the trails. From hydration to cooling and comfort these are the pieces she trusts to perform and recover.

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Your Recovery Edge

Power your recovery with 100% tart cherry juice. Packed with antioxidants that help reduce inflammation and support better sleep, this pure concentrate is trusted by athletes and backed by science.

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Smart Fueling for Every Mile

Eszter relies on these carb-rich gels, hydration mixes and on-the-go favorites to keep energy steady through long training runs and ultramarathons.

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