Moving step by step along a dusty road winding several hundred feet above a roaring river over 10,000 feet above sea level, I was struggling to keep my pace at a something resembling “running”. I was still hiking strong on the ups, but when the road flattened, it took every ounce of my will to shuffle my feet into a run. I was queasy and not eating. Even water tasted bland and un-refreshing, not a good sign just 30 miles in to the 2013 Hardrock 100 Mile Endurance Run. Three weeks prior I had bounded up this road fresh and fit on a 56 mile dress rehearsal training run. Soon the road gave way to …