The ScottTP10 Trail Pack is an ideal backpack for most long distance races and training runs. At 50, its good value for money, considering all the features it has,which include numerous pockets (including 2 bottles), nicely padded construction and well-fitting straps.
I tried it out at the Thames Trot ultra and it worked well. Its light in weight but robust. The mesh pockets on the shoulder straps were ideal for gels. Access to the bottles and the bottle fixing system worked very well. The 9L volume was more than enough for all the bits and pieces of kit I needed (It is compatible with using a bladder system but I didn't use it). It was also very easy to takeoff and put back on, which is very helpful when you're tired! Overall, I couldn't fault it. I will certainly be using it again.