Nutrition on the road - What, How and Why?

Torque gells x 4 and a bison of myprotein pro long, combined with 3x500ml of water got me through a half IM I day without much trouble oh and a mini can of coke, had a spare gel and a second bottle of prolong that I planned to drink, but didn't need them for a longer activity I'd definitely drink the second bottle of prolong

2l fluid for a half? You'd probably go faster with more food too.