Gatorade endurance formula

[Wines Not Whines]

Has anyone tried Gatorade Endurance, or know where to buy it? It looks like that's what will be offered on my marathon course, and given my sensitive stomach, I'd like to do at least a few long training runs with it before race day. It's different from regular Gatorade (double the electrolytes). I haven't seen it in stores, and the only place I've found it online is Amazon. I can order from them, but the price seems a bit steep, so I'm looking for other options. The usual suspects (Running Warehouse, Road Runner Sports, REI, etc) don't seem to have it. 

[trigal]

I used it in my second Ironman. I don't find it any different (taste or stomach issues) than regular Gatorade. DH and I ordered a big vat of the powder online when we saw that was what was on the course. If you do that, be sure to mix it full strength since it will be served full strength in the marathon!

[Wines Not Whines]

Thanks for the feedback!

[jene]

I think I just got a sample of this in my stride box this month, I will let you know what I think of it