Re: eating on an ultra
I wouldn't waste money on expensive bars. I usually eat jam sandwiches, peanut butter rolls, mini chedders and a selection of biscuits just whatever I've got in the house at the time. I do like High5 2:1 energy drink which is very gentle on the stomach and I do carry the odd gel for emergencies just in case I can't get anything else down me. I once had about 4 or 5 gels on the 3 Peaks and I got terrible stomach cramps so I stay clear of them if at all possible. It's all trial and error so just see what suits you.
Linda Murgatroyd, Calder Valley Fell Runners