I just finished a multi-day event where I ran through the Benton MacKay Trail, start to finish, over 287 miles – fueling almost exclusively on e-Fuel. Each day consisted of an average of 35 miles across some of the toughest mountain trails in the Eastern US. e-Fuel carried me through 9 days with little other nutrition except dinner meals. I have always suffered from over/under hydration using other fuels – e-Fuel is the most complete and efficient fuel I have used. My mountain adventure was a great success largely due to e-Fuel.