I do ALMOST exactly what Pedal does - but I mix the Power Bar brand drink in for electrolytes instead of Gu2o - (I use 2 scoops of Sustained Energy and 2 scoops of electrolyte drink per bottle). I estimate this is about 500 cal per bottle. I will use a bottle every hour and a half or so. (You can absorb about 350 cal/hour - the rest is just bloating your gut). I do not eat much if any real food these days. (just the occasional payday.) I am ALWAYS waiting for folks at SAG stops because all I need to do is mix my drink and go, and they're still eating.