No problem making it more concentrated, that’s what Frodo and several other pros do. Just make sure you mix your bottles the morning of the race and not the day before.

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Terrible Tuesday’s Triathlon

that's interesting. I'm fueling on Maurten pretty much exclusively during races (70.3/full) this year but i needed to use a bottle of concentrated gels from a different brand (liquid maxim gels) to supplement my 3xMaurten 320 drink in the hydration unit.

Thusfar, i really like maurten for racing. Especially on the run (a gel every 20'). Don't use it for training for the obvious reason :-)