My last two longruns have not ended well (simply ran out of steam and had to restunder a tree for 30-40 minutes each time before slowly making my wayhome). The most likely explanation is simply dehydration/heatexhaustion as the sun was particularly fierce on both occasions.However, I wonder if inadequate nutrition in advance also contributedto the problem. Does anyone have thoughts on the relative merits asfuel sources for long runs of white rice (can't get any other sort),pasta (not wholdgrain, can't get that), bulgar wheat, cassava, sweetpotatoes, plantains (I can't always get the last two, but when I can,are they good options?) ? Or how about bread since I now have wholewheat flour? Or does it not really matter as long as I eat enough ofany of them?