I do this and have been very happy with it. In years past I've used powerbar hydro (25g/sachet) all dumped into a big water bottle i carry behind the seat. Then a water bottle between the arms w/ electrolyte in it. My standard 70.3 bike program is 100g carbs/hr from 10 powerbar hydros, big sip every 15 minutes. Then at every aid station I grab a water bottle, drink as much as i can from that, if it's hot, squirt the rest on me and then dump it by end of aid station. Then drink off my electrolyte bottle in between aid stations, usually every 10 minutes. I use a big 32oz zefal bottle for that.
This year i'm leaning towards a DIY fuel bottle with the same idea, but probable more in the 120ish g/hr range. I've been using DIY stuff in training to hit those numbers and seem to be handling it. I am playing around with making a 300g bottle that's 3 caffeine gels (3x25g), basically for flavor, and then 225g table sugar to get carbs up. I might split it 112 malto and 112 fructose, but right now the sugar hasn't been beyond my sweetness tolerance, but I could see how it might be for some.
USAT Level 1 Coach
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