There are certain runs that you tell yourself you absolutely have to do sometime. There’s the Boston Marathon, there’s Big Sur, and then there’s the Grand Canyon rim to rim to rim. Today on Endurance Planet we hear from veteran runner John Schultz of Scottsdale, Arizona who is quite familiar with running the Grand Canyon—in fact, he just recently returned from his latest rim to rim to rim. Schultz tells us about the run and what makes it unique.
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