The Importance of Hydration in Ultra Running

I think ultra marathon is your best target audience in terms of how much impact it can actually have. You pay the penalty for failure quite dramatically. The decisions you're making in the first five miles have everything to do with how you're feeling in performing in the last five miles. And again, that's amplified 10 fold when you're talking about 100 mile, 150 mile races and longer. I'm not an ultra marathoner full disclosure. I am a very average marathoner, a four hour marathoner.