I first tried the super high carb mix during a 75 mile road bike race. This mix powered me through for the first 30+ miles of the race, allowing me to pedal right on by the rest stops. This past weekend I used the high-carb mix again for my XC MTB race and felt so good throughout the race, no bonking whatsoever! Two P1 finishes with this in my bottle...super high carb is here to stay.