Hours into your longest efforts, the regular playbook stops working. Your muscles are burning through glycogen, your heart is working harder to push blood where it needs to go, and your legs are sending distress signals your brain is trying to ignore. That's exactly the moment GU Roctane was built for.
GU Roctane is the high-performance version of the original GU Energy Gel, engineered specifically for high-intensity and long-duration efforts where standard fuel just isn't enough.
Amplified Electrolytes for Heavy Sweaters Roctane packs up to 3x more sodium than the original GU gel — sodium is the primary mineral your body loses in sweat, and keeping it topped up is what keeps your muscles firing and your hydration dialed in during extended efforts.
Triple the Amino Acids to Protect Your Muscles Each packet delivers 1,425mg of amino acids — the building blocks that prevent muscle breakdown and help your heart maintain strong output when fatigue sets in. The blend includes taurine, which supports cardiac efficiency, and beta-alanine, which buffers the acid buildup that causes that burning sensation in your legs during high-intensity surges.
Dual-Carb Formula for Steady, Stomach-Friendly Energy The 100-calorie carbohydrate blend uses maltodextrin and fructose, which absorb through separate gut pathways simultaneously — meaning your body can take in more fuel per hour without the GI distress that comes from overloading a single pathway.
Two carbohydrate sources — maltodextrin and fructose — enter your bloodstream through different channels at the same time. That means faster, more efficient fueling with less gut stress. Add in 125mg of sodium per packet to maintain fluid balance and muscle function, and you have a gel that's doing significantly more work than just topping up your carbs. Caffeinated flavors add 35mg of caffeine (70mg in Cold Brew Coffee) to sharpen focus when the fog of fatigue sets in.
How to Use GU Roctane Energy Gels
Before: Take one gel 5 minutes before the start of high-intensity training or racing, with 8 oz. of water.
During: Take one gel every 30–45 minutes throughout your effort, always with water.
Pro tip: Test Roctane in training before race day to dial in your tolerance, especially with caffeinated flavors.
Roctane has been a staple in the kits of ultra-endurance athletes, long-course triathletes, and cyclists logging big training blocks — athletes who know the difference between surviving the last hour and actually performing in it.
When standard fueling leaves you empty at hour three, Roctane picks up where other gels leave off.
