Jim Walmsley: 4x Western States Champion
Jim Walmsley discovered Neversecond through his own research, drawn to the brand’s science-first approach and precision fueling system used by elite cyclists. After testing the products himself, he quietly adopted Neversecond ahead of his historic 2023 UTMB win—where controlled, gut-friendly fueling made the difference. That success laid the foundation for a long-term partnership built on mutual respect and a shared commitment to high performance. Today, Jim continues to collaborate closely with Neversecond, helping shape the future of fueling in ultrarunning.
I was finally able to get my fueling under control at UTMB this year using Neversecond. I was able to hold down 60g of carbs per hour which really helped me in the last 50km.
Jim's Picks
Jim Walmsley's go-to picks for long-course fuel and hydration.
C30 Sports Drink
€28,00 /
C30 Energy Gel
€42,00 /
C30+ Energy Gel
€42,00 /
C90 High Carb Drink Mix
€36,00 /
Guides & Guidance
Actionable training and fueling insights—designed to help you train smarter, fuel better, and perform at your peak.
In this article, we compare the different types of carbohydrate sources so you can decide what works best for you!
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Using the right combination of carbohydrates can improve energy delivery to the muscle.
Is more protein always better?
Breakfast on race day (and also before big training days) is important. Getting it right means you will be well-fueled at the start.
Not all GI problems are avoidable, but taking these 10 steps will minimize your chances of developing them.
Discover Science
Simplifying science to help athletes perform at their highest level—without bias or noise.
